75 entries under heedless topic. ×

34
thoughtless(adjective, sharp, rough, rude, careless)
22
careless(adjective, sharp, rough, indifferent, silly)
19
impulsive(adjective, careless, foolish, natural, bold)
19
rash(adjective, dull, sharp, rough, rude)
17
reckless(adjective, careless, foolish, careful, casual)
16
inconsiderate(adjective, sharp, rough, rude, careless)
16
unconscious(adjective, careless, cold, indifferent, natural)
16
unmindful(adjective, sharp, rude, careless, indifferent)
15
imprudent(adjective, careless, casual, thoughtless, impulsive)
13
hasty(adjective, sharp, rough, rude, careless)
13
impetuous(adjective, careless, thoughtless, impulsive, thinking)
13
inattentive(adjective, sharp, rude, careless, indifferent)
12
negligent(adjective, sharp, rude, careless, indifferent)
11
indiscreet(adjective, dull, sharp, rough, rude)
11
unheeding(adjective, sharp, rude, careless, indifferent)
10
neglectful(adjective, sharp, rude, careless, indifferent)
8
forgetful(adjective, careless, indifferent, silly, foolish)
8
unguarded(adjective, careless, casual, thoughtless, impulsive)
7
improvident(adjective, careless, foolish, casual, bold)
7
injudicious(adjective, wrong, sharp, rough, careless)
11 years ago|16k views|share |citing 
APASmart Define. (2015). unthinking thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/unthinking/thesaurus/synonyms
ChicagoSmart Define. 2015. "unthinking thesaurus" https://smartdefine.org/unthinking/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2015, unthinking thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/unthinking/thesaurus/synonyms>.
MLASmart Define. "unthinking thesaurus" 13 April 2015. Web. 23 September 2026. <https://smartdefine.org/unthinking/thesaurus/synonyms>