Synonyms of regardless

Adjective

1. careless(predicate), regardless, heedless (vs. heedful), unheeding

usage: (usually followed by `of') without due thought or consideration; "careless of the consequences"; "crushing the blooms with regardless tread"

Adverb

1. regardless, irrespective, disregardless, no matter, disregarding

usage: in spite of everything; without regard to drawbacks; "he carried on regardless of the difficulties"

Definition and meaning of regardless (Dictionary)