Insouciant
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upset, untired, long-suffering, worried, unhappy, demanding, alert, interested, jumpy, overburdened, warmhearted, anxious, careful, passionate, conscientious, somber, high-strung, heavyhearted, agitated, grave, critical, intense, heedful, careworn, sensitive, distressed, earnest, strict, nervous, aware, hurried, formal, heavy-hearted, zealous, discouraged, discontented, depressed, active, unnerved, troubled, cautious, attentive, fervent, intolerant, energetic, dissatisfied, concerned, hyped, mindful, wary, keen, warm, disconsolate, curious, lively, serious, caring, sad.