Scansion begins before feet are marked. First you must turn the written line into a sequence of spoken syllables. Latin verse treats adjacent words as a connected phonological phrase, so spaces on the page neither guarantee syllable boundaries nor prevent clusters, resyllabification, and elision.
The safe order is: identify vowel nuclei, distinguish vowels from consonantal i and u, assign consonants to onsets and codas, apply cross-word phonology, and only then determine weight. Starting with a hoped-for hexameter pattern makes it too easy to invent quantities that the language does not have.
Step 1: find nuclei, not vowel letters
Every syllable has a vowel nucleus, but one written vowel letter does not always equal one nucleus. A diphthong such as ae or au is one nucleus; hiatus gives two. Greek loans can preserve hiatus that an English speaker might compress: poēta divides po-ē-ta. Conversely, consonantal i or u belongs to an onset rather than making its own syllable.
| Form | Division | Reason |
|---|---|---|
| caelum | cae-lum | ae is one diphthongal nucleus |
| aurum | au-rum | au is one diphthongal nucleus |
| poēta | po-ē-ta | oē is hiatus here, two nuclei |
| Iūlia | Iū-li-a | initial I is consonantal /j/ before ū |
| aqua | a-qua | qu is one labialized consonant /kʷ/ |
Poēta tria carmina recitāvit.
The poet recited three poems.
Aurum in parvā arcā latet.
The gold is hidden in a small chest.
Iūlia epistulam statim aperuit.
Julia opened the letter immediately.
In the last sentence, the spelling Iūlia follows this guide's i/j convention: consonantal /j/ is written I, not J. It does not create a separate vowel before ū.
Step 2: assign intervocalic consonants
A single consonant between vowels normally begins the following syllable: a-mī-cus, pa-ter, le-gere. A doubled consonant divides: il-le, mit-tō. In a larger cluster, syllabification normally leaves a possible onset for the following syllable and places the preceding consonant or consonants in the coda.
Ille librum mihi herī mīsit.
He sent me the book yesterday.
Ille divides il-le: the first /l/ closes the first syllable and the second begins the next. A written double consonant is not decorative. It affects weight and reconstructed Classical pronunciation.
Stop-plus-liquid clusters—pr, tr, cr, pl, cl, and similar groups—can stay together as the following onset: pa-tris. In verse, poets may sometimes divide them instead, pat-ris, making the preceding short-vowel syllable heavy (literary/poetic). The resulting “common” quantity is a controlled alternative, not a general right to rearrange consonants.
Patris verba puer attentē audīvit.
The boy listened carefully to his father's words.
The division pa-tris leaves pa- light. Where poetic practice licenses pat-ris, pat- is heavy by closure. The meter can help choose between already possible analyses; it cannot authorize an impossible cluster.
Step 3: count consonantal sounds correctly
Written x represents /ks/ and supplies two consonantal segments. Greek z normally counts double in Classical meter. By contrast, qu represents one /kʷ/, and h does not normally create position. Two letters therefore need not mean two consonants, while one letter can represent two.
Axis currūs in viā frāctus est.
The cart's axle broke on the road.
Axis divides approximately ak-sis: /ks/ closes the first syllable and begins the second. But aqua is a-qua, not aq-ua.
Aqua per angustam fossam fluit.
Water flows through a narrow ditch.
Consonantal i also requires phonological knowledge. In words such as Iūlia it is an onset. Between vowels, its historical and phonetic behavior can be more complex, and some forms show strengthening that affects weight. Do not count every printed i as a vowel automatically; consult the lemma and the metrical evidence.
Step 4: remove the wall between words
A line is not scanned word by word. Before a vowel-initial word, a final consonant normally passes into the following onset: ab urbe is syllabified across the space approximately a-bur-be. Before a consonant-initial word, it joins that consonant in a cluster and can make the preceding syllable heavy: sub tēctō has /bt/ across the boundary.
Ab urbe ad vīllam ante noctem pervēnimus.
We reached the country house from the city before nightfall.
Sub tēctō mercātōrēs imbrem exspectant.
The merchants wait out the rain under a roof.
This contrast is a direct diagnostic. Treating ab as obligatorily closed would mis-scan it before urbe; treating every short-vowel word as light would mis-scan sub before tēctō.
Vowel-final words require a further step. Before an initial vowel or h plus vowel, final vowel, or final vowel plus m, is normally elided in much Classical verse. Elision changes the sequence presented to the meter but does not imply that prose spelling had lost the letters. Hiatus and prodelision are licensed alternatives in restricted contexts (literary/poetic); they receive full treatment on Elision, Prodelision, and Hiatus.
Multum ille labōrāvit, sed tandem vēnit.
He worked a great deal, but at last he came.
In verse, multum ille commonly undergoes elision of final -um before ille. In ordinary prose analysis both words retain their dictionary forms. Period and genre matter: later accentual meters may treat these contacts differently (later/medieval).
Step 5: assign weight, then feet
Only after division should you label a syllable light or heavy. A short vowel in an open syllable is light; a long vowel, diphthong, or closed syllable is heavy. Then map that sequence onto the permitted positions of the meter. A biceps position in dactylic hexameter may contain one heavy syllable or two lights; resolution in other meters likewise follows the specific scheme, not convenience.
A useful audit is to write a reason over every heavy syllable: long vowel, diphthong, or closure. If you cannot name the reason, revisit the division. If the phonology is secure but the meter still fails, check elision, a stop-plus-liquid option, textual variation, or your identification of the meter.
A complete worked line
Ovid begins the Metamorphoses:
In nova fert animus mutatas dicere formas.
My mind impels me to tell of forms changed into new bodies. (Ovid, Metamorphoses 1.1; source spelling retained; literary)
With pedagogical vowel quantities and foot divisions:
In-no-va | fer-ta-ni | mus-mū | tā-tās | dī-ce-re | fōr-mās
– ⏑ ⏑ | – ⏑ ⏑ | – – | – – | – ⏑ ⏑ | – x
The source has mutatas without modern quantity marks; analytical mūtātās supplies the learned vowel quantities. Now follow the sound stream:
| Sequence | Result | Reason |
|---|---|---|
| in nova | in-no-va = – ⏑ ⏑ | final /n/ plus initial /n/ closes in; no, va are open shorts |
| fert animus | fer-ta-ni = – ⏑ ⏑ | /r/ remains a coda while final /t/ passes to the onset before a |
| -mus mū- | – – | /sm/ makes short u heavy by position; following ū is long by nature |
| -tā-tās | – – | both vowels are long in the participial form |
| dī-ce-re | – ⏑ ⏑ | long ī, followed by two open short syllables |
| fōr-mās | – x | long ō; final -mās occupies anceps and is itself long |
If the first words were segmented as isolated in | no-va and in were then called light merely because its vowel is short, the opening dactyl would fail. If fert were forced to keep final /t/ while also assigning no coda status to /r/, its weight would be unexplained. Correct division shows why the line fits without altering any vowel.
Common Mistakes
1. Counting every adjacent vowel letter as two syllables
❌ Ca-e-lum
Incorrect—ae is a diphthong and forms one nucleus.
✅ Cae-lum
Correct division: two syllables, with heavy cae-.
2. Treating every written i as a vowel
❌ I-ū-li-a
Incorrect—initial I before ū is consonantal in Iūlia.
✅ Iū-li-a
Correct division: the initial /j/ belongs to the onset of the first syllable.
3. Stopping syllabification at a space
❌ ab | ur-be
Incorrect for connected scansion—the final consonant resyllabifies before the vowel.
✅ a-bur-be
Correct phrase-level division for ab urbe.
4. Splitting qu into a coda and a vowel
❌ aq-ua
Incorrect—u is part of the labialized consonant spelling, not an independent nucleus here.
✅ a-qua
Correct: one consonant begins the second syllable, so a- is light.
Key Takeaways
Find nuclei first, identify glides and diphthongs, assign consonants by Latin onset rules, and scan across word boundaries. Apply elision before measuring the line; assign weight before feet. Exact scansion comes from the Latin sound stream, not from the number of letters or the visual spacing of the text.
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Start learning Latin →Related Topics
- Syllabification and Syllable WeightA2 — How to divide Classical Latin words into syllables and determine whether each syllable is light or heavy without confusing weight with vowel length.
- The Diphthongs AE, AU, and OEA2 — How Classical Latin ae, au, and oe form single heavy syllables, how reconstructed pronunciation differs from later traditions, and how to recognize genuine diphthongs.
- Consonantal I and UA2 — How Latin i and u can function as the nonsyllabic consonants /j/ and /w/, and how this changes syllable count and pronunciation.
- Quantity, Syllables, and MoraeB1 — Distinguish vowel length, syllable weight, moraic structure, word stress, and metrical position in Classical Latin verse.
- Long by Nature and Long by PositionB1 — Determine whether a heavy Latin syllable owes its weight to a long nucleus or to consonants, including cross-word and cluster exceptions.
- Elision, Prodelision, and HiatusB1 — Recognize when adjacent vowels disappear from the metrical count, when forms of esse lose initial e, and when poets deliberately preserve hiatus.