57 entries under imperfect topic. ×

10
bad(adjective, quality, weak, poor, false)
10
substandard(adjective, weak, rough, poor, awful)
10
weak(adjective, slight, poor, false, small)
9
missing(adjective, poor, short, inadequate, exhausted)
9
rare(adjective, close, light, poor, exceptional)
9
sketchy(adjective, inadequate, bare, incomplete)
8
impaired(adjective, poor, false, inferior, inadequate)
7
damaged(adjective, bad, poor, inadequate, incomplete)
7
partial(adjective, inadequate, incomplete, inexact)
6
amiss(adjective, rough, poor, inadequate, atrocious)
6
injured(adjective, poor, inadequate, imperfection, incomplete)
6
not enough(expression, adjective, idiom, poor, inadequate)
6
second-rate(adjective, weak, poor, miserable, inferior)
5
crude(adjective, weak, poor, plain, miserable)
5
failing(adjective, close, light, poor, short)
5
immature(adjective, poor, plain, inadequate, bare)
5
infrequent(adjective, poor, strange, exceptional, inadequate)
5
marred(adjective, poor, inadequate, broken, incomplete)
4
blemished
4
found wanting(expression, adjective, idiom, poor, inadequate)
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APASmart Define. (2015). deficient thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/deficient/thesaurus/synonyms
ChicagoSmart Define. 2015. "deficient thesaurus" https://smartdefine.org/deficient/thesaurus/synonyms (accessed September 27, 2026).
HarvardSmart Define 2015, deficient thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/deficient/thesaurus/synonyms>.
MLASmart Define. "deficient thesaurus" 13 April 2015. Web. 27 September 2026. <https://smartdefine.org/deficient/thesaurus/synonyms>