6
no matter what(expression, idiom, adverb, counter, yet)
6
oblivious(adjective, soft, careless, indifferent, casual)
6
perfunctory(adjective, cold, forget, uncaring, inattentive)
6
slack(adjective, soft, careless, indifferent, unconcerned)
6
uncaring(adjective, careless, cold, indifferent, detached)
6
unheedful(adjective, careless, cold, forget, uncaring)
5
absent-minded(adjective, careless, cold, foolish, stupid)
5
blind(adjective, careless, indifferent, apathetic, unconcerned)
5
but(adverb, everything)
5
cursory(adjective, careless, indifferent, casual, thoughtless)
5
disregardful(adjective, soft, slow, careless, indifferent)
5
inexact(adjective, cold, forget, uncaring, inattentive)
5
irrespective of(verb, expression, phrasal verb)
5
no matter(expression, idiom, adverb)
5
offhand(adjective, careless, indifferent, casual, thoughtless)
5
uninquisitive(adjective, incurious)
5
unsolicitous(adjective, cold, forget, uncaring, inattentive)
5
unthinking(adjective, careless, indifferent, foolish, stupid)
5
unwatchful(adjective, careless, cold, indifferent, forget)
5
yet(adverb, however)
11 years ago|13k views|share |citing 
APASmart Define. (2015). regardless thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/regardless/thesaurus/synonyms
ChicagoSmart Define. 2015. "regardless thesaurus" https://smartdefine.org/regardless/thesaurus/synonyms (accessed September 21, 2026).
HarvardSmart Define 2015, regardless thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/regardless/thesaurus/synonyms>.
MLASmart Define. "regardless thesaurus" 13 April 2015. Web. 21 September 2026. <https://smartdefine.org/regardless/thesaurus/synonyms>