Synonyms|456Antonyms|123|Broader|3Narrower|0Related|154
1
insubstantial(adjective, value, insignificant, unimportant, empty)
1
inutile(adjective, weak, stupid, idle, useless)
1
invalid
1
irreflective(rash, oblivious, neglectful)
1
irregular(adjective, insignificant, useless, empty, senseless)
1
irresolute
1
irresponsive(adjective, madcap, unaccountable)
1
jaunty(adjective, feature, state, trait)
1
jejune
1
jocund(adjective, feature, state, trait)
1
jolly(adjective, feature, state, trait)
1
jovial(adjective, feature, state, trait)
1
joyful(adjective, feature, state, trait)
1
joyous(adjective, feature, state, trait)
1
jubilant(adjective, feature, state, trait)
1
laid-back(adjective, feature, state, trait)
1
laid back(adjective, feature, state, trait)
1
lame(inferior, inadequate, limited, feeble, useless)
1
languorous
1
laughing(adjective, feature, state, trait)
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APASmart Define. (2015). feckless thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/feckless/thesaurus/synonyms
ChicagoSmart Define. 2015. "feckless thesaurus" https://smartdefine.org/feckless/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2015, feckless thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/feckless/thesaurus/synonyms>.
MLASmart Define. "feckless thesaurus" 10 April 2015. Web. 22 September 2026. <https://smartdefine.org/feckless/thesaurus/synonyms>