207 entries under poor topic. ×

10
niggardly(adjective, weak, small, common)
10
bad(adjective, quality, weak, false)
10
stingy(adjective, small, insignificant, unimportant)
10
substandard(adjective, weak, rough, awful)
10
weak(adjective, slight, false, small)
9
missing(adjective, short, inadequate, exhausted)
9
rare(adjective, close, light, exceptional)
8
impaired(adjective, false, inferior, inadequate)
8
low(adjective, mediocre, insufficient, reduced)
8
shabby(adjective, weak, slight, small)
8
sparse(adjective, close, light, weak, slight)
8
unsound(adjective, small, insignificant, unimportant)
7
damaged(adjective, bad, inadequate, incomplete)
6
amiss(adjective, rough, inadequate, atrocious)
6
injured(adjective, inadequate, imperfection, incomplete)
6
mean(adjective, weak, small, common)
6
minus(adjective, inadequate, lacking, shortcoming)
6
not enough(expression, adjective, idiom, inadequate)
6
second-rate(adjective, weak, miserable, inferior)
6
slight(adjective, weak, flat, small)
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APASmart Define. (2015). deficient thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/deficient/thesaurus/synonyms
ChicagoSmart Define. 2015. "deficient thesaurus" https://smartdefine.org/deficient/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2015, deficient thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/deficient/thesaurus/synonyms>.
MLASmart Define. "deficient thesaurus" 13 April 2015. Web. 24 September 2026. <https://smartdefine.org/deficient/thesaurus/synonyms>