Is “Fizziest” a Scrabble word?
Yes
FIZZIEST
Valid in at least one Scrabble dictionary
Valid in these dictionaries
SOWPODS / CSW
Scrabble UK & International
TWL / NWL
Scrabble North America
Large English Dictionary
General English word list
Meaning of Fizziest
adjective
1.(of a liquid) Containing bubbles.
2.Lively, vivacious.
3.Makes a hissing sound.
Synonyms: carbonated, sparkling