Unconcerned

Antonyms of UNCONCERNED

nervous, grave, conscientious, careful, wary, warm, heedful, curious, mindful, caring, passionate, aware, zealous, cautious, warmhearted, feeling, sensitive, anxious, upset, attentive, sympathetic, interested, worried, serious, careworn, concerned, earnest, unnerved, long-suffering, keen, somber, overburdened.