100 entries under incompetent topic. ×

5
hopeless(adjective, stupid, idle, useless, trivial)
5
waste(noun, adjective, poor, base, stupid)
4
bare(adjective, weak, slight, poor, thin)
4
inoperative(adjective, weak, stupid, idle, inadequate)
4
purposeless(adjective, weak, stupid, idle, useless)
3
counterproductive(adjective, poor, base, stupid, inferior)
3
good-for-nothing(adjective, poor, base, stupid, inferior)
3
inept(adjective, weak, stupid, inferior, idle)
3
inferior(adjective, poor, base, insignificant, inadequate)
3
inutile(adjective, poor, base, stupid, inferior)
3
meager(adjective, weak, slight, poor, thin)
3
uneconomical(adjective, wasteful)
3
wasteful(adjective, slow)
2
impracticable(adjective, weak, stupid, idle, trivial)
2
impractical(adjective, weak, stupid, idle, trivial)
2
nugatory(adjective, poor, base, inferior, insignificant)
2
paltry(adjective, slight, poor, base, small)
2
powerless(adjective, weak, silly, stupid, inferior)
2
scanty(adjective, weak, slight, poor, thin)
2
sparse(adjective, weak, slight, poor, thin)
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APASmart Define. (2016). unproductive thesaurus. Retrieved September 30, 2026, from https://smartdefine.org/unproductive/thesaurus/synonyms
ChicagoSmart Define. 2016. "unproductive thesaurus" https://smartdefine.org/unproductive/thesaurus/synonyms (accessed September 30, 2026).
HarvardSmart Define 2016, unproductive thesaurus, Smart Define, viewed 30 September, 2026, <https://smartdefine.org/unproductive/thesaurus/synonyms>.
MLASmart Define. "unproductive thesaurus" 24 March 2016. Web. 30 September 2026. <https://smartdefine.org/unproductive/thesaurus/synonyms>