n. 1 foam, spume, suds, lather, bubbles; head The froth tickles my nose 2 trivia, rubbish, nonsense, twaddle, babble, gibberish, drivel, Colloq hot air, gas, gab, piffle His sermons were just so much froth
v. 3 foam, spume, bubble, fizz, effervesce, aerate You are supposed to drink the medicine while it is frothing 4 foam, salivate; lather He was so angry he began to froth at the mouth