336 entries under adjective topic. ×

16
unsuccessful(weak, useless, trivial, failing)
14
incapable(weak, useless, adequate, incompetent)
14
powerless(weak, silly, stupid, insignificant)
14
unprofitable(poor, base, silly, stupid)
13
idle(weak, stupid, useless, trivial)
13
sterile(weak, poor, base, inferior)
12
barren(weak, poor, base, inferior)
12
feckless(stupid, idle, feeble, useless)
12
insufficient(weak, failure, inadequate, feeble)
12
profitless(poor, base, stupid, inferior)
11
spineless(weak, poor, inferior, inadequate)
11
unfit(weak, appropriate, ready, inadequate)
10
empty(poor, base, inferior, insignificant)
10
impractical(stupid, idle, useless, trivial)
10
inoperative(weak, stupid, idle, useless)
9
lame(weak, poor, inferior, inadequate)
9
meaningless(weak, poor, base, careless)
9
nugatory(poor, failure, base, inferior)
9
unqualified(weak, poor, inadequate, incompetent)
7
good-for-nothing(weak, poor, base, careless)
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APASmart Define. (2016). ineffective thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/ineffective/thesaurus/synonyms
ChicagoSmart Define. 2016. "ineffective thesaurus" https://smartdefine.org/ineffective/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2016, ineffective thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/ineffective/thesaurus/synonyms>.
MLASmart Define. "ineffective thesaurus" 29 March 2016. Web. 24 September 2026. <https://smartdefine.org/ineffective/thesaurus/synonyms>