378 entries under adjective topic. ×

13
futile(weak, inadequate, limited, feeble)
13
motionless(calm, dull, quiet, gentle)
13
slack(verb, stop, dull, delay)
13
unavailing(weak, stupid, dry, inadequate)
13
unused(dull, new, fresh, bare)
13
work-shy(lazy, indolent, faineant)
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worthless(weak, slight, small, silly)
12
bootless(stupid, inadequate, limited, feeble)
12
dormant(calm, dull, quiet, gentle)
12
ineffective(weak, stupid, useless, trivial)
12
ineffectual(weak, stupid, inadequate, limited)
12
languorous(dull, careless, indifferent, still)
12
shiftless(action, dull, moving, careless)
12
torpid(calm, dull, quiet, slow)
12
trifling(dull, slight, careless, indifferent)
12
trivial(slight, small, silly, foolish)
11
empty(slight, false, small, silly)
11
free(bare, inactive, busy, relaxing)
11
groundless(reason, false, true, worthless)
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insignificant(slight, small, useless, trivial)
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APASmart Define. (2015). idle thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/idle/thesaurus/synonyms
ChicagoSmart Define. 2015. "idle thesaurus" https://smartdefine.org/idle/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2015, idle thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/idle/thesaurus/synonyms>.
MLASmart Define. "idle thesaurus" 23 October 2015. Web. 25 September 2026. <https://smartdefine.org/idle/thesaurus/synonyms>