3
sinkage(noun, drop, area, decline, fall)
3
slot(noun, break, place, cut, position)
3
socket(noun, break, area, retreat, opening)
3
sophistical(adjective, fake, false, counterfeit, unreasonable)
3
tongue in cheek(expression, idiom)
3
treacherous(adjective, wrong, false, dishonest, unpredictable)
3
trifling(adjective, slight, flat, value, small)
3
trivial(adjective, slight, flat, value, small)
3
unprofitable
3
unsound(adjective, wrong, fake, flat, false)
3
untrue(noun, adjective, wrong, fake, false)
3
with nothing inside(expression, idiom)
3
wooden(adjective, dull, stiff, sluggish, uninteresting)
2
abortive(adjective, useless, trivial, empty, insufficient)
2
abysm
2
alcove(noun, break, place, position, retreat)
2
altogether(adverb, completeness)
2
antrum(noun, pocket, cavity)
2
armpit(space, hole, pocket, crater)
2
asinine
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APASmart Define. (2015). hollow thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/hollow/thesaurus/synonyms
ChicagoSmart Define. 2015. "hollow thesaurus" https://smartdefine.org/hollow/thesaurus/synonyms (accessed September 26, 2026).
HarvardSmart Define 2015, hollow thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/hollow/thesaurus/synonyms>.
MLASmart Define. "hollow thesaurus" 10 April 2015. Web. 26 September 2026. <https://smartdefine.org/hollow/thesaurus/synonyms>