75 entries under idiom topic. ×

9
back talk(noun, expression, return, rude)
7
oral cavity(noun, expression)
3
oral fissure(noun, expression)
2
make a face(verb, expression, express, contort)
2
natural harbor(expression, gulf lake)
1
air duct
1
blow the whistle(expression, reveal, admit, communicate)
1
bring to light(verb, expression, release, tell)
1
burst into song(expression, wait, shout, whistle)
1
chew the cud
1
come out of the closet(verb, expression, release, tell)
1
connoisseur of food
1
draw hole
1
give lip service
1
give mouth honor
1
let hair down(expression, reveal, admit, communicate)
1
lift up a voice(expression, wait, shout, whistle)
1
make a mouth
1
make a to-do(verb, expression, rage, storm)
1
mop and mow
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APASmart Define. (2016). mouth thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/mouth/thesaurus/synonyms
ChicagoSmart Define. 2016. "mouth thesaurus" https://smartdefine.org/mouth/thesaurus/synonyms (accessed September 27, 2026).
HarvardSmart Define 2016, mouth thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/mouth/thesaurus/synonyms>.
MLASmart Define. "mouth thesaurus" 28 February 2016. Web. 27 September 2026. <https://smartdefine.org/mouth/thesaurus/synonyms>