To speak or converse
To speak emptily or trivially; chatter
To grimace is defined as to make an unpleasant fact or twist up your facial features, often to indicate displeasure.
To speak or write in an angry or emotionally charged manner; rave.
To speak loudly and vehemently; inveigh.
Find another word for mouthing. In this page you can discover 11 synonyms, antonyms, idiomatic expressions, and related words for mouthing, like: verbalizing, uttering, speaking, talking, mugging, grimacing, ranting, raving, haranguing, declaiming and expressing.