Polysyllable.
Words with two or three syllables are called disyllables and trisyllables, respectively, though 'polysyllable' can be a word with two syllables or more.
A word with multiple syllables would be described as polysyllabic.
5 - a syllable is another word for a letter
There is one syllable for the word what.
The word "have" has just one syllable.
The word plant has one syllable. This means that there is no syllable divide for this word.
The word "tell" has one syllable.
one syllable
one syllable
one syllable
one syllable
The word "to" has one syllable.
In the word "the", there is one syllable.
Crown has one syllable.