87 entries under thoughtless topic. ×

12
careless(adjective, feature, state, indifferent, wild)
7
heedless(adjective, feature, state, careless, indifferent)
7
carefree(adjective, feature, state, careless, indifferent)
5
shiftless(adjective, careless, purpose, reckless)
5
unreliable(adjective, careless, immoral, reckless)
5
unthinking(adjective, careless, careful, rash)
5
untrustworthy(adjective, careless, immoral, reckless)
4
incautious(adjective, careless, wild, purpose)
4
negligent(adjective, feature, state, careless, indifferent)
4
undependable(adjective, careless, immoral, reckless)
3
inadvertent(adjective, careless, rash, unwise)
3
lax(adjective, feature, state, careless, trait)
2
inattentive(adjective, careless, indifferent, wild, careful)
2
tactless(adjective, rude, careless, unwise)
2
uncareful(adjective, careless, wild, immoral)
2
unheeding(adjective, careless, unwise, reckless)
2
unmindful(adjective, careless, careful, rash)
1
fast and loose(expression, idiom, wild, rash)
1
foolhardy(wild, rash, oblivious, irresponsible)
1
harebrained(careless, wild, immoral, negligent)
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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>