Vowel pairs, and why a doubled letter matters

Two vowels side by side glide together inside one beat, and a doubled letter is one sound held longer. Holding a sound longer can turn one word into another.

≈ 3 min of reading · Practise at your own pace

What’s in this chapter

Two vowels side by side glide from the first into the second, inside one beat.
A doubled letter is one sound held longer — never two separate sounds.
Two things the spelling never shows — a third, longer length and a soft consonant — are worth knowing about and never worth producing.

Two vowels, one beat

Estonian often writes two vowels next to each other. They slide from the first into the second inside one beat, so the word has fewer beats than it looks.

Letters	Sound to try	A word
ai	like the English word eye	laineLAHY-neh“wave”
ei	like the English word hey	eiehy“no, not”
ui	oo gliding into ee	kuidasKOOY-dahs“how”
äi	the a of cat gliding into ee	päikePAY-keh“sun”
au	like the English word cow	laullahwl“song”
õu	flat-lipped uh gliding into oo	õunuhwn“apple”
oe, äe	the first vowel gliding into eh	koerKOH-ehr“dog”, mäelMA-ehl“on the hill”
ea	eh gliding into ah	heaHEH-ah“good”

Both sounds survive; they share one beat. In the respellings, a y on the end is the glide of boy and a w the glide of cow — and where a pair has no glide letter the respelling breaks it across a hyphen: KOH-ehr and HEH-ah are still one beat.

A doubled letter is not a stutter. It is the same sound, held about twice as long — and that length carries meaning, exactly as a different vowel would.

Hold it, and the word changes

Holding a sound longer can turn one word into a different word. Compare the two columns and listen for the extra length on the right.

Short	Held long
kaskahs — the word that opens a yes-or-no question	kasskahss — a cat
sadaSAH-dah — a hundred	saadaSAAH-dah — send!

The respellings double too: aa is “aah”, ee is “ehh”, ii is “ee”, oo is “ohh”, uu is “ooh”, and ää öö üü õõ are “aa”, “urr”, “eww”, “uhh”.

What the spelling does not tell you

Two differences live in the speech and never reach the spelling. You will never have to make them, and knowing they are there stops them confusing you.

palkpahlk and palkpahlk

two different words

one is wages, the other a log — in the second the l is said with the tongue flat against the roof of the mouth, and Estonian never writes this

kooliKOHH-li and kooliKOHH-li

of the school, into the school

the second holds the oo longer still — the third length, which reading never needs

Try a glide, then a held sound

kuidas
The ui is one beat.
Show answer +Hide answer −
kuidasKOOY-dahs“how”
kass and kas
One of them holds the s.
Show answer +Hide answer −
kasskahss“cat” holds it; kaskahs opens a question.
öö
One held sound, not two beats.
Show answer +Hide answer −
ööurr“night”

Come back to these chapters whenever you need them.All Estonian chapters ↗