What Is a Syllable?
A plain definition of a syllable: a beat of speech built around a vowel sound. Learn the onset, nucleus and coda, see words from one to five syllables, and tell open from closed syllables.
A syllable is one beat of a spoken word, built around a vowel sound. Linguists describe it as a basic unit of organization within a sequence of speech sounds, such as a word. In everyday terms: say a word slowly, and each pulse of sound you hear is a syllable.
The key word is sound. Syllables are about how a word is spoken, not how it is spelled. “Cake” has two vowel letters but you only say one vowel sound, so it is one syllable. “Rhythm” has no a, e, i, o or u at all, yet you say two beats: RIH-thum.
The vowel-sound test
To find the syllables in a word, count its vowel sounds. Say the word aloud, ignore the spelling, and note each separate vowel sound you make. That count is the number of syllables. Two vowel letters side by side (like ea in “beach”) usually make one sound, and a letter you barely pronounce (like the final e in “make”) makes none.
This is also how syllablehub counts. Each word in the CMU Pronouncing Dictionary is written as a string of sounds, with stress marks on the vowels, so our syllable counter simply counts the vowel sounds in that entry. For the hands-on methods (clapping, the chin trick) and the awkward cases like -ed endings, see How to Count Syllables.
The parts of a syllable
Every syllable has a centre, and often some consonants around it. Teachers and linguists use three names for the pieces:
- Nucleus: usually the vowel in the middle of a syllable. It is the one part a syllable cannot do without.
- Onset: the consonant sound or sounds before the nucleus.
- Coda: the consonant sound or sounds after the nucleus. The word literally means “tail”.
Onset and coda are optional. Here is how three short words, and then a two-syllable one, divide. The table uses the same informal respellings as the examples table below, and the ah in “stop” is the US pronunciation:
| Word | Onset | Nucleus | Coda |
|---|---|---|---|
| cat | k | a (as in “apple”) | t |
| go | g | oh | (none) |
| stop | st | ah | p |
| water (WAH + ter) | w + t | ah + er | (none) + (none) |
Notice that these are sounds, not letters. In “water”, each syllable has its own onset and nucleus. The c in “cat” is the sound k, and the o in “go” is the sound oh. The st in “stop” is a two-consonant onset, and a word like “eat” has no onset at all, because it starts straight on the vowel.
Syllables in words: one to five
Words can have as many syllables as they have vowel sounds. The counts below come from the vowel sounds in each word’s CMU Pronouncing Dictionary entry, so they and the respellings follow standard US pronunciation. Some accents differ; see Words With Two Syllable Counts. Capital letters in the “Say it as” column mark the stressed syllable, the one you say louder and longer.
| Word | Say it as | Syllables |
|---|---|---|
| cat | cat | 1 |
| water | WAH-ter | 2 |
| banana | buh-NAN-uh | 3 |
| dictionary | DIK-shuh-nair-ee | 4 |
| university | yoo-nuh-VUR-suh-tee | 5 |
The shortest words are the easiest to work with. Browse the full list of one-syllable words to see how many different patterns fit in a single beat.
Open and closed syllables
Once you can spot the nucleus and coda, you can sort syllables into two basic types. A syllable with no coda, one that ends in its vowel, is an open syllable. A syllable that does have a coda is called a closed syllable. In linguistics, the split is simply whether there is a coda. “Go” and “me” are open; “cat” and “stop” are closed.
Phonics teaching uses more syllable types than linguists do, and its “closed” is narrower: a single vowel followed by a consonant, as in “cat”. In “cake” the final e is silent, so phonics calls it a silent-e syllable, even though by the coda rule above it is closed. Phonics also uses open syllables to help with reading. A reading-instruction explainer from Reading Universe notes that in “jumbo” the first syllable jum is closed, while the open syllable bo ends in a long o.
Common mix-ups
Two mistakes come up most. The first is counting vowel letters instead of vowel sounds, which gives the wrong answer for words like “cake” and “rhythm”. The second is assuming everyone divides a word the same way. Where one syllable ends and the next begins can be a matter of convention, and some words are spoken with a different number of beats by different people. The words where that happens most are collected in Words With Two Syllable Counts.