verb

(of a liquid) produce bubbles of gas and make a hissing sound.

his lemonade was still fizzing at the top of the glass

effervesce,sparkle,bubble,froth,foam,seethe,roil,spume

noun

the quality of being fizzy; effervescence.

the champagne had lost its fizz

effervescence,sparkle,fizziness,bubbles,bubbliness,gassiness,carbonation,aeration,froth,foam,mousse,lather,suds,head