/ ˌʌnkənˈsɜːnd; NAmE -ˈsɜːrnd/ adjective
1.
unconcerned (about / by sth) not worried or anxious about sth because you feel it does not affect you or is not important :
He drove on, apparently unconcerned about the noise the engine was making.
2.
unconcerned (with sb/sth) not interested in sth :
Young people are often unconcerned with political issues.
OPP concerned
► un·con·cern·ed·ly / ˌʌnkənˈsɜːnɪdli; NAmE / adverb