How many syllables does cheerful have?

Answer 1

'Cheers' has only one syllable. It is spoken all on one go, with no break.

The 'ch' is pronounced like the ch in channel.

'eer' is prounced like the eer in beer.

The 's' is pronounced like a 'z', like the zz in buzz.

Answer 2

In RP standard English cheerful has two syllables CHEER-FUL. But there is a common, and acceptable, non-standard pronunciation which gives it three syllables CHEE-ER-FUL.

Both syllable counts are correct, both are natural; which pronunciation is adopted will depend mostly on the regional accent of the speaker, but to some extent on mood and sentence ictus.

---- A second opinion

most people would say it has two