Not every Greek adjective declines. A handful — most of them colours or foreign loans — have exactly one form that they wear with any noun, of any gender, number or case. μπλε is μπλε whether the noun is masculine, feminine or neuter, singular or plural, subject or object: το μπλε αυτοκίνητο, τα μπλε αυτοκίνητα, με μπλε μάτια, της μπλε πόρτας. For an English speaker this is the easy corner of Greek adjectives — they behave like English ones, sitting frozen in front of the noun. The only real skill is knowing which colours are frozen and which are not, because Greek's everyday colour vocabulary is split right down the middle.
Why they don't decline
These words don't decline because they never picked up a Greek inflectional slot. Most are French loans that entered the language whole — μπλε (bleu), καφέ (café → the colour of coffee), ροζ (rose), γκρι (gris), μοβ (mauve), μπεζ (beige), λιλά (lilas) — and a loan has no Greek stem to attach endings to, so it simply stays put. A second group is native but frozen: the -ί colours like πορτοκαλί (orange), θαλασσί (sea-blue), κυπαρισσί (cypress-green), σταχτί (ash-grey) are old neuter forms that hardened into all-purpose adjectives. Either way, the result is the same: no endings, ever.
Αγόρασα ένα μπλε φόρεμα για τον γάμο της αδερφής μου.
aghórasa éna ble fórema ya ton ghámo tis adherfís mu
I bought a blue dress for my sister's wedding.
Της αρέσουν τα μπλε τζιν πιο πολύ από τα μαύρα.
tis arésun ta ble dzin pio polí apó ta mávra
She likes blue jeans more than black ones.
Το μωρό έχει μεγάλα μπλε μάτια, σαν του πατέρα του.
to moró échi meghála ble mátia, san tu patéra tu
The baby has big blue eyes, like his father's.
Look closely at that last sentence. μεγάλα (native, declinable) has taken the neuter plural ending to agree with μάτια — but μπλε, sitting right beside it, does not move. Two adjectives, one noun, and only one of them inflects. That side-by-side contrast is the whole story of this class.
Το χρώμα της μπλε θάλασσας το πρωί με ηρεμεί.
to chróma tis ble thálasas to proí me iremí
The colour of the blue sea in the morning calms me.
The everyday loan colours
Here are the indeclinable colours you actually need, each stuck in one form:
| Colour | Meaning | Origin |
|---|---|---|
| μπλε | blue | Fr. bleu |
| καφέ | brown | Fr. café |
| ροζ | pink | Fr. rose |
| γκρι | grey | Fr. gris |
| μοβ | purple, mauve | Fr. mauve |
| μπεζ | beige | Fr. beige |
| πορτοκαλί | orange | native (-ί) |
Φοράει πάντα καφέ παπούτσια, ακόμα και το καλοκαίρι.
forái pánda kafé papútsia, akóma ke to kalokéri
He always wears brown shoes, even in summer.
Της πήρα ένα ροζ μπαλόνι και έγινε η πιο χαρούμενη του κόσμου.
tis píra éna roz balóni ke éyine i pio charúmeni tu kózmu
I got her a pink balloon and she became the happiest kid in the world.
Το ηλιοβασίλεμα έβαψε τον ουρανό πορτοκαλί και μοβ.
to iliovasílema évapse ton uranó portokalí ke mov
The sunset turned the sky orange and purple.
The native colours, which do decline
Set against the loans is the core of the colour system — native adjectives that inflect normally, mostly in the καλός type. These you must make agree:
| Masculine | Feminine | Neuter | Meaning |
|---|---|---|---|
| κόκκινος | κόκκινη | κόκκινο | red |
| άσπρος | άσπρη | άσπρο | white |
| μαύρος | μαύρη | μαύρο | black |
| κίτρινος | κίτρινη | κίτρινο | yellow |
| πράσινος | πράσινη | πράσινο | green |
| γαλάζιος | γαλάζια | γαλάζιο | light blue |
So Greek forces a choice on you every time you name a colour: is it a loan (frozen) or a native word (agreeing)? Sometimes both exist for nearly the same shade — γκρι (loan, indeclinable) sits beside γκρίζος (native, declinable), both meaning "grey", and you pick by register and habit.
Φόρεσε ένα κόκκινο φουστάνι και κόκκινα παπούτσια στη γιορτή.
fórese éna kókino fustáni ke kókina papútsia sti yortí
She wore a red dress and red shoes to the party.
Ο ουρανός ήταν γκρίζος όλη μέρα και το απόγευμα έβρεξε.
o uranós ítan grízos óli méra ke to apóyevma évrekse
The sky was grey all day and it rained in the afternoon.
The -ί colour family
Beyond the French loans, Greek has a whole productive series of indeclinable colours built with the frozen ending -ί, most of them named after the thing they resemble: πορτοκαλί (orange, from πορτοκάλι), θαλασσί (sea-blue, from θάλασσα), κυπαρισσί (cypress-green), σταχτί (ash-grey, from στάχτη), τριανταφυλλί (rose-pink), βυσσινί (deep cherry-red). Alongside them sit a couple of loans that end the same way and behave the same way — χακί (khaki), τιρκουάζ (turquoise). All of these are stuck in one form and stress the final syllable; you never make them agree.
Έβαψε τους τοίχους του δωματίου σε ένα απαλό θαλασσί.
évapse tus tíchus tu dhomatíu se éna apaló thalasí
She painted the room's walls a soft sea-blue.
Ο στρατιώτης φορούσε μια χακί στολή γεμάτη σκόνη.
o stratiótis forúse mia chakí stolí yemáti skóni
The soldier wore a khaki uniform covered in dust.
Loans beyond colour
The same freezing hits non-colour loans that never took a Greek ending: σικ (chic), ρετρό (retro), βίντατζ (vintage), σέξι (sexy), βιπ (VIP). They modify a noun without any agreement, exactly like the colours.
Φοράει πάντα πολύ σικ ρούχα, ακόμα και σε ένα απλό μεσημεριανό.
forái pánda polí sik rúcha, akóma ke se éna apló mesimerianó
She always wears very chic clothes, even to a simple lunch.
Βρήκαμε ένα ρετρό καφενείο με παλιά έπιπλα και δίσκους βινυλίου.
vríkame éna retró kafenío me palyá épipla ke dhískus vinilíu
We found a retro café with old furniture and vinyl records.
Common Mistakes
1. Giving an indeclinable colour a Greek ending. μπλε is μπλε in the plural too — no ×μπλες, no ×μπλα.
❌ Το δωμάτιο έχει μπλες κουρτίνες.
Incorrect — μπλε never inflects: not ×μπλες, just μπλε κουρτίνες.
✅ Το δωμάτιο έχει μπλε κουρτίνες.
to dhomátio échi ble kurtínes
The room has blue curtains.
2. Trying to make καφέ agree. There is no ×καφιά or ×καφά for the colour — καφέ covers every gender and number. Don't be fooled by ο καφές "coffee", a real noun with a real plural οι καφέδες: the colour καφέ is its invariable homograph, not a form of it.
❌ Έχει όμορφα καφιά μάτια.
Incorrect — the colour is invariable: καφέ μάτια.
✅ Έχει όμορφα καφέ μάτια.
échi ómorfa kafé mátia
She has beautiful brown eyes.
3. Failing to decline a native colour. The flip side: κόκκινος, μαύρος, πράσινος and the rest do agree, and freezing them is just as wrong.
❌ Φόρεσε κόκκινο παπούτσια στον γάμο.
Incorrect — παπούτσια is neuter plural, so it must be κόκκινα.
✅ Φόρεσε κόκκινα παπούτσια στον γάμο.
fórese kókina papútsia ston ghámo
She wore red shoes to the wedding.
4. Confusing πορτοκαλί (the colour) with πορτοκαλιά (the tree). The indeclinable colour is πορτοκαλί; πορτοκαλιά is a feminine noun meaning "orange tree" — a different word, not an inflected colour.
❌ Τα φύλλα έγιναν πορτοκαλιά το φθινόπωρο.
Incorrect — the colour is πορτοκαλί; πορτοκαλιά means 'orange tree'.
✅ Τα φύλλα έγιναν πορτοκαλί το φθινόπωρο.
ta fíla éyinan portokalí to fthinóporo
The leaves turned orange in the autumn.
Key Takeaways
- Indeclinable adjectives have one form for every gender, number and case — mostly loan colours (μπλε, καφέ, ροζ, γκρι, μοβ, μπεζ) and the native -ί colours (πορτοκαλί, θαλασσί).
- They stay frozen even next to a fully agreeing adjective: μεγάλα μπλε μάτια.
- Native colours decline normally (κόκκινος/-η/-ο, μαύρος, πράσινος, γαλάζιος) — do not freeze them.
- Some shades come in both flavours: γκρι (frozen) beside γκρίζος (declining).
- Non-colour loans (σικ, ρετρό, σέξι) behave the same way — no endings at all.
- Watch πορτοκαλί (colour) vs πορτοκαλιά (orange tree).
Now practice Greek
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Start learning Greek →Related Topics
- Color AdjectivesA2 — The practical vocabulary and grammar of Greek colours — the native ones that decline and agree (κόκκινος, μαύρος, πράσινος, γαλάζιος, καφετής) versus the loan and -ί colours that never change (μπλε, ροζ, μωβ, γκρι, καφέ, πορτοκαλί), the καφέ/καφές trap, and how to build light and dark shades (ανοιχτό, σκούρο, ανοιχτογάλαζο).
- Indeclinable Nouns (Loanwords)B1 — A small but very common group — το ταξί, το μπαρ, το σινεμά, το μετρό — that never changes its ending: the article alone carries gender, case and number, and this page shows exactly how that works and which words belong to the club.
- How Greek Adjectives WorkA1 — The map of the Greek adjective system — a describing word that agrees with its noun in gender, case and number and declines just like a noun, the dominant καλός/καλή/καλό pattern, the smaller classes it fans out into, and why an English speaker has to start inflecting a word that in English never changes at all.