Vowel length & macrons

macrons · ā ē ī ō ū · long and short

§ 1

What this is

Samoan has five vowels — but each one comes in two versions: short and long. That length difference is not a stylistic choice. It changes the meaning of the word entirely.

Macrons (the little lines above letters: ā, ē, ī, ō, ū) are the written signal that a vowel is long — and learning to notice them is one of the first real skills in Samoan pronunciation.

§ 2

How it works

the rules

Every vowel in Samoan has a short version and a long version — the length alone can make two identical-looking words mean completely different things.
Samoan vowels are pronounced similarly to Continental European vowels (Italian, Spanish) — not English.
The second-to-last syllable (the penult) usually takes the stress in a word, unless the final syllable contains a long vowel or a diphthong — in that case, stress shifts to the end.
Vowels in stressed syllables and in final syllables naturally lengthen slightly in speech.
Vowels in earlier syllables (two or more back from the stress) tend to shorten or reduce — this is normal and expected, not a mistake.
The long /ō/ and /ē/ sounds have a slight glide toward a higher vowel — you'll hear this in natural speech.
The a vowel is open and central; in unstressed syllables it becomes more central still.
Two identical vowels meeting across a word or morpheme boundary can merge into a single long vowel — especially when stressed.
In the colloquial K-language: there is a tendency to shorten all vowels in syllables before the penult. This is normal in conversation but not in formal speech or writing. See also T-language & K-language.
On macrons in writing: standard Samoan writing does not consistently mark long vowels or the glottal stop. Macrons appear mainly when a word needs clarifying — when two words look identical and context alone won't distinguish them. Don't expect to see macrons everywhere; learn to hear the length.
Compound shortening: when a nominalising suffix is added to a word ending in a long vowel, that final long vowel shortens. The length belongs to the root word, not the compound.

§ 3

Examples

To be drafted

Your hand-picked examples go here — pairs or sets that show the rule applied to real words.

Short vs long vowel pairs that change meaning — to be drafted.

§ 4

Notes & distinctions

Macrons are a teaching and disambiguation tool, not standard punctuation — fluent writers often omit them entirely, and that's correct.
Vowel length is phonemic (meaning-changing), not emphatic — lengthening a vowel for emphasis is a separate, spoken phenomenon that works differently.
Emphasis can be indicated by lengthening the first and/or last syllable of a word in speech — but this is a spoken register choice, not the same as lexical vowel length.
The glottal stop interacts closely with vowel length — see Glottal stop.
Sources differ slightly on whether the glottal stop counts as a full consonant phoneme or a diacritical mark — both framings are in use; for learners, treating it as a real consonant is the safer habit.

§ 5

Common learner mistakes

Treating a long vowel as "just emphasis" rather than a different phonological unit — in Samoan, length is structural.
Assuming that because macrons are absent in most written Samoan, vowel length doesn't matter — it matters enormously in speech.
Applying English stress rules instead of Samoan penult-default stress.
Missing the stress shift when the final syllable carries a long vowel — the word sounds wrong but learners can't pinpoint why.
Pronouncing Samoan vowels with English vowel sounds instead of Continental open vowels.

§ 6

Quick tip

in your voice

To be drafted

Your quick tip goes here.

A one-line memory hack, written like you'd say it to a friend.

§ ·

Sources

Mosel, U. & Hovdhaugen, E. Samoan Reference Grammar. Scandinavian University Press, 1992 — primary source for vowel phonology, stress rules, and length description.
Pratt, G. A Grammar and Dictionary of the Samoan Language. London Missionary Society, 1862 — original codification; public domain.
Duranti, A. From Grammar to Politics. UC Press, 1994 — register and colloquial speech patterns.

Linguistic classification

Covers F2 (Vowel Length and Glottal Stop — vowel length component only). Glottal stop component addressed in the companion entry. Classification based on Mosel & Hovdhaugen (1992) and Pratt (1862).

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T-language & K-language

Glottal stop

Samoan Grammar