53 entries under opening topic. ×

15
aperture(noun, open, thing, breach)
15
opening(noun, open, thing, breach)
14
orifice(noun, open, thing, beginning)
12
entrance(noun, thing, beginning)
12
inlet(noun, beginning, entrance, haven)
11
door(noun, beginning, breach, hole)
10
estuary(noun, nature, gulf lake)
10
gob
8
trap(noun, informal)
8
vent(noun, open, breach, hole)
7
chops(noun, beginning, edge)
7
firth(noun, nature, arm, entrance)
7
gate(noun, beginning)
7
muzzle(noun, edge)
7
outlet(noun, open, breach, hole)
7
yap
6
embouchure
6
hole(noun, open, breach, gap)
6
jaws(noun, edge, entrance, door)
6
lips(noun, beginning)
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APASmart Define. (2016). mouth thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/mouth/thesaurus/synonyms
ChicagoSmart Define. 2016. "mouth thesaurus" https://smartdefine.org/mouth/thesaurus/synonyms (accessed September 26, 2026).
HarvardSmart Define 2016, mouth thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/mouth/thesaurus/synonyms>.
MLASmart Define. "mouth thesaurus" 28 February 2016. Web. 26 September 2026. <https://smartdefine.org/mouth/thesaurus/synonyms>