happy-go-lucky Antonyms

like a cat on hot bricks stressed wretched worried unquiet unhappy troubled tense sorrowful sad nervous mournful miserable ill at ease jittery jumpy all of a lather all of a dither woebegone out of sorts on tenterhooks on pins and needles like a cat on a hot tin roof beside oneself overburdened antsy uptight overstrung melancholy melancholic low-spirited despondent despairing desolate depressed dejected concerned careworn bothered blue apprehensive anxious agitated disconsolate dismal distressed high-strung harassed hag-ridden glum