A syllable is a unit of pronunciation uttered without interruption, loosely, a single sound. All words are made from at least one syllable.

Monosyllables are words that have only one vowel sound; polysyllables have more than one. If a syllable ends with a consonant, it is called a closed syllable. If a syllable ends with a vowel, it is called an open syllable. Patterns of syllables can be shown with C and V (C for 'consonant', V for 'vowel'). Closed syllables are often shown as CVC (such as got), and open syllables as CV (such as go). Some languages like English have many kinds of closed syllables. Other languages, like Japanese, have few kinds of closed syllables. Other languages still, like Hawaiian and Swahili, have no closed syllables.