45 entries under feeble topic. ×

24
unproductive(adjective, flat, poor, base, silly)
24
useless(adjective, weak, flat, poor, base)
21
fruitless(adjective, flat, silly, stupid, inadequate)
21
futile(adjective, flat, poor, base, stupid)
20
worthless(adjective, gain, poor, base, value)
19
unavailing(adjective, poor, base, silly, stupid)
19
vain(adjective, flat, stupid, inadequate, limited)
16
barren(adjective, flat, poor, base, inferior)
16
bootless(adjective, weak, inferior, inadequate)
13
unsuccessful(adjective, gain, inferior, inadequate)
11
unfruitful(adjective, inadequate, useless, bleak)
9
abortive(adjective, weak, inferior, useless)
9
ineffectual(adjective, poor, base, silly, stupid)
8
idle(adjective, weak, inferior, useless)
6
inefficient(inferior, inadequate, limited, useless)
5
inefficacious(adjective, inferior, inadequate, useless)
3
impotent(adjective, silly, stupid, inferior, insignificant)
3
incompetent(weak, stupid, idle, inadequate, limited)
3
inferior(adjective, poor, base, insignificant, inadequate)
3
inoperative(weak, stupid, inferior, idle, inadequate)
<123>
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APASmart Define. (2015). unprofitable thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/unprofitable/thesaurus/synonyms
ChicagoSmart Define. 2015. "unprofitable thesaurus" https://smartdefine.org/unprofitable/thesaurus/synonyms (accessed September 21, 2026).
HarvardSmart Define 2015, unprofitable thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/unprofitable/thesaurus/synonyms>.
MLASmart Define. "unprofitable thesaurus" 10 April 2015. Web. 21 September 2026. <https://smartdefine.org/unprofitable/thesaurus/synonyms>