86 entries under feature topic. ×

47
careless(noun, adjective, state, easy)
44
thoughtless(adjective, state, easy, sharp)
36
reckless(adjective, state, free, easy)
30
negligent(noun, adjective, state, easy)
24
indifferent(noun, adjective, state, sharp)
19
unconcerned(noun, adjective, state, sharp)
14
irresponsible(adjective, state, careless, wild)
13
devil-may-care(adjective, state, free, careless)
11
nonchalant(adjective, state, careless, indifferent)
8
casual(adjective, state, careless, trait)
8
insouciant(adjective, state, dull, indifferent)
7
feckless(adjective, state, careless, indifferent)
7
happy-go-lucky(adjective, state, careless, trait)
5
airy(adjective, state, trait, casual)
5
blithe(adjective, state, indifferent, trait)
5
lax(adjective, state, careless, indifferent)
4
carefree(adjective, state, careless, indifferent)
4
easygoing(adjective, state, dull, careless)
4
free and easy(expression, adjective, idiom, state)
4
untroubled(adjective, state, indifferent, trait)
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APASmart Define. (2016). heedless thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/heedless/thesaurus/synonyms
ChicagoSmart Define. 2016. "heedless thesaurus" https://smartdefine.org/heedless/thesaurus/synonyms (accessed September 21, 2026).
HarvardSmart Define 2016, heedless thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/heedless/thesaurus/synonyms>.
MLASmart Define. "heedless thesaurus" 24 March 2016. Web. 21 September 2026. <https://smartdefine.org/heedless/thesaurus/synonyms>