80 entries under careless topic. ×

19
idle(adjective, action, dull, moving)
18
indolent(adjective, action, dull, indifferent)
18
slothful(adjective, action, dull, indifferent)
11
sluggish(adjective, action, dull, slow)
11
slack(adjective, dull, sluggish, dubious)
6
feckless(adjective, thoughtless, purpose, reckless)
6
good-for-nothing(adjective, weak, feeble, dubious)
5
laggard(adjective, dull, indifferent, idle)
4
aimless(adjective, weak, moving, idle)
4
ineffective(adjective, weak, feeble)
4
irresponsible(adjective, weak, feeble, reckless)
4
lax(adjective, thoughtless, sluggish, lazy)
4
negligent(adjective, reckless, imprudent, spendthrift)
4
dilatory(adjective, dull, indifferent, idle)
4
improvident(adjective, spendthrift, nonpreparation)
4
slow(adjective, dull, indifferent, idle)
4
thoughtless(reckless, erratic, negligent, frivolous)
3
inattentive(adjective, dull, idle, dubious)
3
incompetent(adjective, weak, feeble, dubious)
3
remiss(adjective, dull, idle, sluggish)
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APASmart Define. (2015). shiftless thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/shiftless/thesaurus/synonyms
ChicagoSmart Define. 2015. "shiftless thesaurus" https://smartdefine.org/shiftless/thesaurus/synonyms (accessed September 21, 2026).
HarvardSmart Define 2015, shiftless thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/shiftless/thesaurus/synonyms>.
MLASmart Define. "shiftless thesaurus" 14 April 2015. Web. 21 September 2026. <https://smartdefine.org/shiftless/thesaurus/synonyms>