89 entries under deficient topic. ×

34
wanting(verb, adjective, preposition, clear, poor)
28
deficient(adjective, weak, flat, poor, plain)
22
missing(verb, adjective, poor, split, quit)
17
absent(adjective, split, usual, excess, away)
16
inadequate(adjective, weak, poor, small, miserable)
16
insufficient(adjective, weak, poor, small, common)
14
short(adjective, clear, weak, free, poor)
13
defective(adjective, poor, plain, small, common)
13
poor(adjective, clear, weak, flat, small)
13
shy(adjective, clear, weak, free, poor)
12
incomplete(adjective, weak, poor, plain, miserable)
11
scanty(adjective, clear, weak, poor, small)
9
scarce(adjective, clear, weak, poor, small)
8
imperfect(adjective, weak, poor, plain, miserable)
8
unsatisfactory(adjective, weak, poor, small, miserable)
7
devoid(adjective, clear, free, full, short)
7
empty(adjective, poor, full, exhausted)
7
failing(verb, adjective, preposition, weak, poor)
7
meager(adjective, weak, poor, thin, small)
6
destitute(adjective, clear, free, full, down)
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APASmart Define. (2015). lacking thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/lacking/thesaurus/synonyms
ChicagoSmart Define. 2015. "lacking thesaurus" https://smartdefine.org/lacking/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 2015, lacking thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/lacking/thesaurus/synonyms>.
MLASmart Define. "lacking thesaurus" 10 April 2015. Web. 20 September 2026. <https://smartdefine.org/lacking/thesaurus/synonyms>