- 1when a liquid fizzes, it produces a lot of bubbles and makes a long sound like an “s” Champagne was fizzing in the glass. fizz with something
- 2(figurative) He started to fizz with enthusiasm.
NAmE//fɪz//[intransitive]Verb Forms present simple I / you / we / they fizz
he / she / it fizzes
past simple fizzed
-ing form fizzing