125 entries under adjective topic. ×

2
half-baked(well, incompetent, wasteful, unproductive)
2
idle(weak, inferior, inadequate, limited)
2
inactive
2
inexperienced(inadequate, useless, improper, incompetent)
2
shiftless
2
uneconomic
2
uneconomical(extravagant, incompetent, lavish, wasteful)
2
vain(weak, inferior, inadequate, limited)
1
aged(weak, thin, delicate, shaky)
1
ailing(weak, thin, delicate, shaky)
1
chicken(weak, thin, delicate, shaky)
1
debilitated(weak, thin, delicate, feeble)
1
decrepit(weak, thin, delicate, shaky)
1
deficient
1
delicate(weak, thin, shaky, incompetent)
1
delinquent
1
doddering(weak, thin, delicate, shaky)
1
dopey(weak, thin, delicate, shaky)
1
effete(weak, thin, delicate, shaky)
1
emasculated(weak, thin, delicate, shaky)
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APASmart Define. (2015). inefficient thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/inefficient/thesaurus/synonyms
ChicagoSmart Define. 2015. "inefficient thesaurus" https://smartdefine.org/inefficient/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2015, inefficient thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/inefficient/thesaurus/synonyms>.
MLASmart Define. "inefficient thesaurus" 12 November 2015. Web. 25 September 2026. <https://smartdefine.org/inefficient/thesaurus/synonyms>