D defs.my
Entry 1 sense Webster, 1913

Unconcerned

/ŭnˌ-kən-sẽrnd'/ · Un·con·cerned · IPA /ˌʌnkənsˈɜrnd/
01 a. Not concerned; not anxious or solicitous; easy in mind; carelessly secure; indifferent; as, to be unconcerned at what has happened; to be u…
  1. 1.
    Not concerned; not anxious or solicitous; easy in mind; carelessly secure; indifferent; as, to be unconcerned at what has happened; to be unconcerned about the future.
    “Happy mortals, unconcerned for more.” Dryden.