mouth (CL:張|张[zhang1]); slap in the face

mouth; in the mouth; on one's lips; speech; words

lip; CL:片[pian4]

reluctant to admit a mistake

features, face (esp. derogatorily); look; appearance; countenance

corner of the mouth

prudent in speech

(coll.) to speak in a clever and lovable way

mouth shape when speaking or singing

muzzle (for a dog etc)

mouth; beak; spout; mouthpiece

sharp-tongued; to have a keen sense of taste; to be picky about one's food

to have loose lips

(dialect) sharp-tongued; harsh

to have a loose tongue; talkative

(slang) sb who effectively articulates others' thoughts or feelings on their behalf

loose-tongued

(coll.) unable to control one's tongue; prone to say sth nasty

(Internet slang) to mouth off; to shoot one's mouth off; sb who does that

tight-lipped

Jew's harp

(coll.) to get one's words mixed up; to misspeak

sweet-talking; ingratiating

straight shooter

loquacious; garrulous; wordy

(Tw) (coll.) mouthy; cocky and verbally provocative

able to keep a secret

inarticulate

prone to saying sth inappropriate or offensive

soft-spoken; afraid to speak out

gluttonous; ravenous

to have a loose tongue

to fall flat on one's face

slap

lit. lips; fig. glib talk

outspoken and frank (idiom)

sweet mouth, bitter heart (idiom); insincere flattery

see 刀子嘴，豆腐心[dao1 zi5 zui3 , dou4 fu5 xin1]

see 嘴上沒毛，辦事不牢|嘴上没毛，办事不牢[zui3 shang4 mei2 mao2 , ban4 shi4 bu4 lao2]

a youth without facial hair cannot be relied upon (proverb)