326 entries under adjective topic. ×

1
flaccid(uncertain, feeble, hesitant, sluggish)
1
forgetful(slow, careless, indifferent, casual)
1
half asleep(expression, tired, lethargic, sleepy)
1
hard-hearted(indifferent, unsympathetic, inattentive, uninterested)
1
having spring fever(expression, idiom, dull, heavy)
1
icy(temper, cold, negative, behave)
1
immobile
1
impassible(temper, cold, negative, behave)
1
imperturbable(calm, cool, relaxed, casual)
1
ineffective
1
infirm(dull, weak, easy, slow)
1
inhuman(temper, cold, negative, behave)
1
involuntary(unthinking, superficial, dutiful, sketchy)
1
irresolute(uncertain, feeble, shaky, hesitant)
1
lackluster(dull, flat, low, sad)
1
laid back(expression, calm, cool, informal)
1
lulling(tired, lethargic, sleepy, dazed)
1
mechanical(unthinking, superficial, dutiful, sketchy)
1
mellow(calm, cool, relaxed, detached)
1
museful
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APASmart Define. (2016). lackadaisical thesaurus. Retrieved September 29, 2026, from https://smartdefine.org/lackadaisical/thesaurus/synonyms
ChicagoSmart Define. 2016. "lackadaisical thesaurus" https://smartdefine.org/lackadaisical/thesaurus/synonyms (accessed September 29, 2026).
HarvardSmart Define 2016, lackadaisical thesaurus, Smart Define, viewed 29 September, 2026, <https://smartdefine.org/lackadaisical/thesaurus/synonyms>.
MLASmart Define. "lackadaisical thesaurus" 2 March 2016. Web. 29 September 2026. <https://smartdefine.org/lackadaisical/thesaurus/synonyms>