Welcome to the Elon.io Greek Grammar Guide. 56 topics across every area of Greek grammar, tagged by CEFR level so you can find the right page for your level.
A118 pagesA219 pagesB116 pagesB22 pagesC11 pagesC20 pages
Start Here (A1)
New to Greek? These are the foundation topics every beginner needs.
- Feminine Nouns in -α — The most common feminine pattern — η γυναίκα, η ώρα, η μέρα, η θάλασσα — with its plain paradigm, the -ας genitive singular, and the one tricky cell: the accent-shifting genitive plural (η θάλασσα → των θαλασσών).
- Feminine Nouns in -η — The second great feminine class — η αγάπη, η νίκη, η τέχνη, η ζάχαρη — declined in full, with its -ης genitive singular, its plain -ες plural, and the warning that a big learned subgroup (η πόλη → οι πόλεις) breaks the pattern.
- The Three Genders — Every Greek noun is masculine, feminine, or neuter — and that gender, shown by its article ο / η / το, controls the adjectives and pronouns around it, so you learn each noun together with its article, not on its own.
- Number and the Four Cases — Every Greek noun inflects for number (singular/plural) and for one of four cases — nominative, genitive, accusative, vocative — with the article often carrying the case even more visibly than the noun itself.
- Masculine Nouns in -ος — The largest masculine class — nouns like ο δρόμος, ο ουρανός and ο άνθρωπος — with its full singular and plural paradigm, the accent shift that hits antepenult-stressed nouns in the genitive, and the -ε vocative.
- Neuter Nouns in -ο — The friendliest noun class in Greek: neuter -ο nouns (το βιβλίο, το νερό) where the nominative, accusative and vocative are always identical, so in the singular only the genitive -ου stands apart.
- Neuter Nouns in -ι — Neuter nouns like το παιδί and το σπίτι, whose genitive -ιού and plural -ια are pronounced as a single glide (παιδιά = 'pedhyá'). Home of the everyday diminutive -άκι.
- The Greek Alphabet: 24 Letters — Every one of the 24 Greek letters — its name, its sound, and its two shapes — plus the single biggest beginner trap: a handful of letters look exactly like Latin ones but sound completely different (Ρ is 'r', Η is 'i', Χ is 'ch').
- How This Guide Romanizes Greek — The exact reading aid used on every page — η/ι/υ→i, β→v, δ→dh, θ→th, χ→ch — with the one rule that matters most: the stressed syllable always carries an acute accent, because Greek stress is unpredictable from spelling.
- Letters That Look Latin But Aren't — The letters that ambush English readers: Ρ is 'r' not 'p', Η is 'i' not 'h', Χ is 'ch' not 'x', Β is 'v' not 'b'. Learn to distrust your eyes on signs and headlines — and discover where the 'missing' b and d sounds hide.
- Vowel Digraphs: αι, ει, οι, ου, υι — Five two-letter combos spell single vowels: αι = 'e' (και), ει/οι/υι = 'i' (είναι, ποιος), ου = 'u' (μου). Because ει, οι, υι all collapse into 'i' with η/ι/υ, they're the root of Greek's biggest spelling headache — and the diaeresis (Μάιος) exists to un-merge them.
- αυ and ευ: av/af, ev/ef — αυ and ευ never sound like English 'ow' or 'you'. They carry a hidden v/f: voiced before vowels and voiced consonants (αύριο = 'ávrio'), voiceless before voiceless consonants and word-finally (αυτός = 'aftós', ευχαριστώ = 'efcharistó').
Nouns
Cross-cutting
- Forming the PluralA2 — One reference for every plural ending in Greek — masculine -οι / -ες / -άδες, feminine -ες / -εις, neuter -α / -ια / -ματα / -η — plus the classic trap where a neuter plural in -α (τα παιδιά, 'the children') is mistaken for a feminine singular.
- The Vocative Case (Direct Address)A2 — How to change a noun's ending when you call or address someone: masculine φίλος → φίλε, but the name Γιώργος → Γιώργο; Γιάννης → Γιάννη; Θωμάς → Θωμά; feminine and neuter usually stay put (Μαρία!, παιδί μου!). The everyday address κύριε / κυρία and the dropped article.
- Accent Shift in DeclensionB1 — Why the stress jumps forward when you decline a noun — άνθρωπος but του ανθρώπου, αυτοκίνητο but του αυτοκινήτου, κυβέρνηση but των κυβερνήσεων. The three-syllable law applied systematically, gender by gender, with tables showing exactly which cells move.
- Forming the Genitive SingularA2 — The genitive singular ending for every noun class — masculine -ος→-ου, -ας→-α, -ης→-η; feminine -α→-ας, -η→-ης; neuter -ο→-ου, -ι→-ιού, -μα→-ματος, -ος→-ους — with the article του/της/του and the classic trap of over-keeping the -ς on masculines.
- The Genitive Plural (-ων)B1 — The plural 'of the…' form ends in -ων for almost every Greek noun (των ανθρώπων, των παιδιών, των πόλεων→-εων), and the article is always των — but the stress is the trickiest in the language, so natives often sidestep the awkward ones with από + accusative.
Feminine
- Feminine Nouns in -αA1 — The most common feminine pattern — η γυναίκα, η ώρα, η μέρα, η θάλασσα — with its plain paradigm, the -ας genitive singular, and the one tricky cell: the accent-shifting genitive plural (η θάλασσα → των θαλασσών).
- Feminine Nouns in -ηA1 — The second great feminine class — η αγάπη, η νίκη, η τέχνη, η ζάχαρη — declined in full, with its -ης genitive singular, its plain -ες plural, and the warning that a big learned subgroup (η πόλη → οι πόλεις) breaks the pattern.
- Learned Feminines: η πόλη → οι πόλειςB1 — The Ancient-derived feminine class — η πόλη, η δύναμη, η τάξη, η λέξη — that ends in -η like an ordinary feminine but takes the plural -εις and the distinctive genitive plural -εων (των πόλεων). Ultra-common words you cannot avoid.
- Feminine Nouns in -οςB1 — The counterintuitive class that looks masculine but isn't — η οδός, η μέθοδος, η άμμος, η Κύπρος. They take feminine articles and adjectives (η κεντρική οδός) yet decline exactly like masculine -ος nouns (της οδού, την οδό).
- Imparisyllabic Feminines (-άδες, -ούδες)B1 — Oxytone feminine nouns that grow a syllable in the plural — η γιαγιά → οι γιαγιάδες, η αλεπού → οι αλεπούδες — versus the look-alike η αγελάδα that stays the same length. Home of grandmothers, mums and loan words.
Gender & Number
- The Three GendersA1 — Every Greek noun is masculine, feminine, or neuter — and that gender, shown by its article ο / η / το, controls the adjectives and pronouns around it, so you learn each noun together with its article, not on its own.
- Predicting Gender from EndingsA2 — A decision table for guessing a Greek noun's gender from its nominative ending — -μα and -ση/-ξη/-ψη are near-certain, -ας/-ης point masculine, -ι/-ο neuter, while -ος is the one ending that can be all three genders.
- Number and the Four CasesA1 — Every Greek noun inflects for number (singular/plural) and for one of four cases — nominative, genitive, accusative, vocative — with the article often carrying the case even more visibly than the noun itself.
Masculine
- Masculine Nouns in -οςA1 — The largest masculine class — nouns like ο δρόμος, ο ουρανός and ο άνθρωπος — with its full singular and plural paradigm, the accent shift that hits antepenult-stressed nouns in the genitive, and the -ε vocative.
- Masculine Nouns in -αςA2 — The two -ας masculine types: parisyllabic nouns like ο άντρας and ο πατέρας (plural -ες) versus imparisyllabic occupational nouns like ο ψαράς and ο παπάς (plural -άδες), with the genitive singular in bare -α that trips up learners.
- Masculine Nouns in -ης and -εςA2 — Masculine agent and family nouns like ο μαθητής, ο ναύτης and ο πολίτης — singular in -ης, plural in -ες, with an oxytone genitive plural in -ών, the -η vocative, and a warning not to confuse this noun ending with the -ης two-termination adjective.
- Masculine Nouns in -ές, -ούς, -άςB1 — A small but everyday set of oxytone masculines — ο καφές, ο παππούς, ο μπαμπάς — with imparisyllabic -δες plurals and a stripped-down contracted genitive, plus the contracted noun ο νους.
- Imparisyllabic Masculines (-άδες, -ούδες)B1 — A large family of masculine nouns — ο ψαράς, ο καφές, ο παππούς, ο μπακάλης — that grows an extra syllable in the plural (οι ψαράδες, οι καφέδες), a pattern English has almost nowhere.
Neuter
- Neuter Nouns in -οA1 — The friendliest noun class in Greek: neuter -ο nouns (το βιβλίο, το νερό) where the nominative, accusative and vocative are always identical, so in the singular only the genitive -ου stands apart.
- Neuter Nouns in -ιA1 — Neuter nouns like το παιδί and το σπίτι, whose genitive -ιού and plural -ια are pronounced as a single glide (παιδιά = 'pedhyá'). Home of the everyday diminutive -άκι.
- Neuter Nouns in -μαA2 — The productive -μα class (το πρόβλημα, το όνομα, το γράμμα) whose real stem is the hidden -ματ- that surfaces in every case except the nominative: το όνομα → του ονόματος. Miss the -ματ- and you say *του ονόμα.
- Learned Neuters in -οςB1 — The learned neuter class (το δάσος, το μέρος, το λάθος) whose -ος nominative looks masculine but is neuter — genitive -ους, plural -η. The article το, not the ending, tells you the gender apart from masculine ο δρόμος and feminine η οδός.
- Other Learned NeutersB2 — The residual learned neuters whose true stem hides until you decline them — το φως / του φωτός / τα φώτα, το κρέας / του κρέατος, το γάλα / του γάλακτος, and the participial neuters το καθήκον, το προϊόν, το παρόν, το μέλλον, το γεγονός, το ον. Everyday words with irregular stems you simply have to learn.
Pronunciation & Alphabet
Alphabet
- The Greek Alphabet: 24 LettersA1 — Every one of the 24 Greek letters — its name, its sound, and its two shapes — plus the single biggest beginner trap: a handful of letters look exactly like Latin ones but sound completely different (Ρ is 'r', Η is 'i', Χ is 'ch').
- How This Guide Romanizes GreekA1 — The exact reading aid used on every page — η/ι/υ→i, β→v, δ→dh, θ→th, χ→ch — with the one rule that matters most: the stressed syllable always carries an acute accent, because Greek stress is unpredictable from spelling.
- Letters That Look Latin But Aren'tA1 — The letters that ambush English readers: Ρ is 'r' not 'p', Η is 'i' not 'h', Χ is 'ch' not 'x', Β is 'v' not 'b'. Learn to distrust your eyes on signs and headlines — and discover where the 'missing' b and d sounds hide.
Digraphs
- Vowel Digraphs: αι, ει, οι, ου, υιA1 — Five two-letter combos spell single vowels: αι = 'e' (και), ει/οι/υι = 'i' (είναι, ποιος), ου = 'u' (μου). Because ει, οι, υι all collapse into 'i' with η/ι/υ, they're the root of Greek's biggest spelling headache — and the diaeresis (Μάιος) exists to un-merge them.
- αυ and ευ: av/af, ev/efA1 — αυ and ευ never sound like English 'ow' or 'you'. They carry a hidden v/f: voiced before vowels and voiced consonants (αύριο = 'ávrio'), voiceless before voiceless consonants and word-finally (αυτός = 'aftós', ευχαριστώ = 'efcharistó').
- Consonant Digraphs: μπ, ντ, γκ, τσ, τζA1 — Greek has no single letter for the sounds /b/, /d/, /g/, /ts/ or /dz/ — it builds them from two-letter digraphs. If you can't find 'b' in μπύρα or 'd' in ντομάτα, this is why.
- Voicing and PrenasalizationA2 — Why πάντα is heard as both 'pánta' and 'pánda', why δεν πειράζει comes out 'dhembirázi', and why none of this changes the spelling — the hidden pronunciation rule that turns a written ν into a voiced stop.
- Double ConsonantsA2 — θάλασσα is said 'thálasa', άλλος is 'álos', Ελλάδα is 'Eládha' — Modern Greek pronounces a double consonant as a single sound. You must spell the two letters but say only one.
Punctuation
- Greek Punctuation: ; and ·A1 — Two marks trip up every learner: the Greek question mark is a semicolon shape ; (Τι κάνεις;), not the Latin ?, and the Greek semicolon is a raised dot · (άνω τελεία). Everything else — commas, full stops, the guillemets «…» — is close to English.
- Sentence IntonationB1 — Greek melody does grammatical work: statements fall, yes/no questions rise, and word order need not change — so Ήρθες. ('You came.') and Ήρθες; ('Did you come?') differ only in the final pitch. Where English inverts words, Greek leans on the tune.
Sandhi
- The Final-ν Rule (τελικό ν)A2 — When to keep and when to drop the final ν of τον, την, δεν, μην, έναν and στην/στον. Keep it before a vowel or a stop (τον πατέρα, έναν άντρα); drop it before other consonants (τη γυναίκα, το δρόμο) — a rule that shapes both spelling and pronunciation.
- Elision and SynizesisB1 — Why σε αυτό becomes σ' αυτό, από εδώ becomes απ' εδώ, and θα έρθω becomes θα 'ρθω — and why μια is one syllable ('mya'), not two. The vowel-smoothing that makes spoken Greek flow; full forms sound stiff.
- Euphonic and Movable ConsonantsB1 — The little sound-smoothers of spoken Greek: και → κι before a vowel (κι εγώ, κι όμως), the σαν/σα alternation, and the movable ν. Optional, euphonic, and idiomatic — they make speech flow rather than clatter.
Sounds
- The Five Vowel SoundsA1 — Greek has just five vowel sounds — /a e i o u/ — and every one is pure, short and fully pronounced, even unstressed. The big English-speaker error is reducing unstressed vowels to a mushy schwa; the flip side is that /i/ can be spelled six different ways.
- Consonant SoundsA1 — The Greek consonants English speakers get wrong: δ is the soft 'th' of 'this', θ the hard 'th' of 'thin', ρ a tapped r — and π, τ, κ are unaspirated, with none of the little puff English adds. Two habits to unlearn: substituting your own 'd' and puffing your stops.
- The 'th' Sounds: δ and θA1 — English writes both with 'th', but Greek splits them into two letters: δ is the voiced 'th' of 'this' [ð], and θ is the voiceless 'th' of 'thin' [θ]. Get the voicing backwards and δεν slides into a foreign-sounding 'den'.
- The Letter γ (gamma)A2 — γ is never the hard 'g' of 'go'. It softens to a throaty [ɣ] before α/ο/ου (γάλα = 'ghála') and to a 'y'-glide [ʝ] before ε/ι (γεια = 'ya'). The following vowel tells you which — and the clusters γγ, γκ, γχ have their own rules.
- The Letter χ (chi)A2 — χ is neither English 'ch' (church) nor 'x'. It's a fricative: throaty [x] like Scottish 'loch' before α/ο/ου (χαρά), and soft [ç] like the 'h' in 'huge' before ε/ι (όχι). The killer error is reading it as /ks/ — that's ξ, a completely different letter.
- Consonant ClustersA2 — ψωμί, ξέρω, φτάνω, βγαίνω, σχολείο — Greek stacks consonants at the start of a word in ways English forbids. The fix is to stop sneaking a vowel in: say 'psomí', never 'puh-somi'.
Stress
- Stress and the Tonos (´)A1 — The little accent over καλημέρα, νερό, άνθρωπος is the most important mark in Greek. It shows the stressed syllable — and it changes meaning: πότε ('when') vs ποτέ ('never').
- Where the Stress FallsA2 — Greek stress is unpredictable but not lawless: it must land within the last three syllables. When an ending adds a syllable, the accent is forced to move forward — άνθρωπος but του ανθρώπου, μάθημα but μαθήματα.
- The Second Accent (Enclitic Stress)B1 — Why ο δάσκαλός μου and το αυτοκίνητό μας carry two accents while ο φίλος μου carries only one. A real written rule that most learners — and plenty of natives — get wrong, and that competing guides skip entirely.
Spelling
Consonants
- Which Words Take Double ConsonantsB2 — Because Greek pronounces a double consonant exactly like a single one (θάλασσα = 'thálasa'), your ear can't tell you when to write σσ, λλ, μμ or ρρ — you have to know the word. Here are the patterns and the high-frequency words to lock in.
Endings
- Spelling Verb EndingsB1 — A verb ending is spelled by what it does, not by how it sounds. Learn the fixed spellings — active -ω, -εις, -ει; passive -ομαι, -εται — and the three homophone traps they resolve, like γράφεται (is written) vs γράφετε (you write).
- Noun and Adjective Endings: ο/ω, η/ιB1 — Which vowel letter closes a noun or adjective is decided by its gender and case, not its sound: masculine -ος and neuter -ο take omicron, the genitive plural -ων always takes omega, and the adverb καλώς contrasts with the adjective καλός.
- Spelling Diminutive SuffixesB1 — Greek loves little-word suffixes — σπιτάκι, μανούλα, κοπελίτσα — and each has a fixed spelling learners get wrong: -άκι with iota (and it's neuter), -ούλα with ου, -ίτσα with τσ, plus the stress that always lands on the suffix.
System
- Greek Historical SpellingA2 — The big picture: Greek spelling is etymological, not phonetic, so a single sound is written several ways — /i/ can be η, ι, υ, ει, or οι. Pronunciation is easy; spelling is learned word by word from ancient roots. But grammatical endings are predictable, and that's your lifeline.
- Capitalization RulesA2 — Greek capitalizes days and months (like English) but writes languages, nationality adjectives, and seasons in lowercase — and it keeps the tonos on an initial capital vowel (Έλληνας) while dropping every accent in ALL-CAPS text (ΕΛΛΑΔΑ).
- Why Greek Dropped the Breathing MarksC1 — In 1982 Greek officially abolished the polytonic system — the two breathing marks and the three-way accent — for a single tonos, because those diacritics had marked sounds (an /h/, a pitch accent) that vanished from speech nearly two thousand years earlier.
- Common Spelling ErrorsB1 — A proofreading checklist for the mistakes learners and natives make most: -ω vs -ο in verbs, -ται vs -τε, ει/η/ι in endings, the movable final -ν, the missing tonos, and και vs κι — each with the rule that fixes it.
Vowels
- Spelling the /i/ Sound: η ι υ ει οιA2 — The single hardest thing about writing Greek: five different spellings — η, ι, υ, ει, οι (plus archaic υι) — all sound identical, /i/. You can't hear which one a word takes, but you can predict most of them from grammatical endings and word families. This is the page to master.
- Spelling the /o/ Sound: ο vs ωA2 — Two letters, ο (omicron) and ω (omega), spell the identical sound /o/. Which one you write is mostly decided by the grammatical ending — verbs end -ω, neuter nouns -ο, masculines -ος — and getting it wrong can flip a verb into a noun: καλώ ('I invite') vs καλό ('good').
- Spelling the /e/ Sound: ε vs αιA2 — The sound /e/ hides behind two spellings — plain ε (μέρα, θέλω) and the digraph αι (και, παιδί, αίμα). The good news: every passive verb ending is αι, which turns a big chunk of the guesswork into a fixed rule.