85 entries under opening topic. ×

26
hole(noun, break, drop, place, area)
25
cavity(noun, break, area, thing, depression)
19
void(noun, adjective, break, area, depression)
12
recess(noun, break, place, cut, position)
10
abyss(noun, crack, split, well)
8
gap(noun, break, cut, breach)
7
blank(noun, adjective, break, value, insignificant)
6
notch(noun, verb, break, area, cut)
5
chamber(noun, break, area, cut, crack)
5
cleft(noun, adjective, break, area, cut)
5
vacuity(noun, break, area, depression, impression)
4
chasm(noun, break, cut, breach)
4
cut(noun, verb, break, mark, line)
4
gulf(noun, area, dish, deep)
4
hollowness(noun, void, emptiness, concavity)
4
space(noun, break, cut, crack, rest)
3
aperture(noun, break, cut, crack, rest)
3
lacuna(noun, break, cut, crack, rest)
3
slot(noun, break, place, cut, position)
3
socket(noun, break, area, retreat)
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APASmart Define. (2015). hollow thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/hollow/thesaurus/synonyms
ChicagoSmart Define. 2015. "hollow thesaurus" https://smartdefine.org/hollow/thesaurus/synonyms (accessed September 27, 2026).
HarvardSmart Define 2015, hollow thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/hollow/thesaurus/synonyms>.
MLASmart Define. "hollow thesaurus" 10 April 2015. Web. 27 September 2026. <https://smartdefine.org/hollow/thesaurus/synonyms>