2
doleful
2
dormant(adjective, dull, heavy, weary, apathetic)
2
drooping(adjective, dull, relaxed, sluggish, lazy)
2
emotionless(adjective, indifferent, apathetic)
2
feckless(adjective, indifferent, cheerful, unsympathetic, easygoing)
2
feeble(adjective, dull, weak, easy, slow)
2
flagging(adjective, action, dull, weak, heavy)
2
going through the motions(expression, adjective, idiom, unthinking, superficial)
2
half-baked
2
happy-go-lucky(adjective, informal, careless, casual, unconcerned)
2
irresponsible(adjective, casual, happy-go-lucky, slapdash)
2
lachrymose
2
loitering
2
loose(adjective, calm, cool, relaxed, indifferent)
2
mindless(casual, happy-go-lucky, slapdash)
2
motionless
2
placid(adjective, calm, cool, relaxed, casual)
2
procrastinating(dull, idle, sluggish, dubious, lazy)
2
reckless(careless, casual, easygoing, happy-go-lucky, slapdash)
2
regardless(slow, careless, indifferent, casual, thoughtless)
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APASmart Define. (2016). lackadaisical thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/lackadaisical/thesaurus/synonyms
ChicagoSmart Define. 2016. "lackadaisical thesaurus" https://smartdefine.org/lackadaisical/thesaurus/synonyms (accessed September 28, 2026).
HarvardSmart Define 2016, lackadaisical thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/lackadaisical/thesaurus/synonyms>.
MLASmart Define. "lackadaisical thesaurus" 2 March 2016. Web. 28 September 2026. <https://smartdefine.org/lackadaisical/thesaurus/synonyms>