give+vent+to+frothily
1froth — I. n. 1. Spume, foam. 2. Triviality, nonsense, empty show, mere words, balderdash, trash, flummery, bosh (colloq.). II. v. a. 1. Cause to foam, cover with foam or spume. 2. Emit as foam, give vent to frothily. III. v. n …
