frothing

(verb) become bubbly or frothy or foaming. Synonyms: foam, froth, fizz, effervesce, sparkle, form bubbles. Examples: "The boiling soup was frothing." "The river was foaming." "Sparkling water."

(verb) make froth or foam and become bubbly. Synonyms: froth, spume, suds. Example: "The river foamed."

(verb) exude or expel foam. Synonyms: froth. Example: "The angry man was frothing at the mouth."

(adj) producing or covered with lathery sweat or saliva from exhaustion or disease. Synonyms: foaming, foamy. Example: "The rabid animal's frothing mouth."