Englishunconcerned
adjective
1 readers think that the author is unconcerned with their responses to the text:
indifferent about, unmoved by, apathetic about, uninterested in, incurious about, uninvolved in/with, dispassionate about, deaf to, heedless of, unmindful of, bored by;
cool, remote, aloof, detached, lukewarm, unenthusiastic.
▷antonyms concerned, interested, attentive.
2 Stanley shrugged and tried to look unconcerned:
untroubled, unworried, unperturbed, unruffled, unanxious, insouciant, nonchalant, blasé, carefree, blithe, casual, without a care in the world, serene, relaxed, at ease, devil-may-care, happy-go-lucky, cool, calm, and collected;
informal laid-back, unflappable;
North American, informal nonplussed;
rare pococurante.
▷antonyms concerned, anxious.
unconcerned Oxford Dictionary of English