Nouns

(n)mouth, oral cavity, oral fissure, rima oristhe opening through which food is taken in and vocalizations emerge“he stuffed his mouth with candy”
(n)mouththe externally visible part of the oral cavity on the face and the system of organs surrounding the opening“she wiped lipstick from her mouth”
(n)mouthan opening that resembles a mouth (as of a cave or a gorge)“he rode into the mouth of the canyon”, “they built a fire at the mouth of the cave”
(n)mouththe point where a stream issues into a larger body of water“New York is at the mouth of the Hudson”
(n)moutha person conceived as a consumer of food“he has four mouths to feed”
(n)mouthpiece, moutha spokesperson (as a lawyer)
(n)sass, sassing, backtalk, back talk, lip, mouthan impudent or insolent rejoinder“don't give me any of your sass”
(n)mouththe opening of a jar or bottle“the jar had a wide mouth”

Verbs

(v)talk, speak, utter, mouth, verbalize, verbaliseexpress in speech“She talks a lot of nonsense”, “This depressed patient does not verbalize”
(v)moutharticulate silently; form words with the lips only“She mouthed a swear word”
(v)mouthtouch with the mouth