unbothered
[ uhn-both-erd ]
/ ʌnˈbɒð ərd /
adjective
not experiencing mental or physical discomfort: He was unbothered by the cold.He was unbothered about not being picked for the team.
Slang.
indifferent to criticism or negative comments; not annoyed or provoked: She was unbothered by her many haters.They swear they’re unbothered, but they care.