53 entries under opening topic. ×

6
portal(noun, nature, beginning)
5
embouchement(noun, nature)
5
harbor
5
kisser
4
mush
4
rim(noun, edge)
3
delta
3
gap(noun, breach, hole)
3
gullet
3
nozzle
3
spout(attack, declare, rage, breach)
2
box
2
crevice(noun, breach, hole, gap)
2
hatch(noun, breach, hole, gap)
2
pore(noun, egress)
1
beak
1
cavity(noun, breach, hole, gap)
1
chasm
1
clam
1
crack(breach, hole, gap)
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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>