moody

Synonyms: angry cantankerous capricious changeable crabbed crestfallen cross dismal doleful dour downcast down in the dumps down in the mouth erratic fickle fitful flighty frowning gloomy glum huffy ill-humored ill-tempered impulsive in a huff in the doldrums introspective irascible irritable lugubrious melancholy mercurial miserable moping morose offended out of sorts pensive petulant piqued sad saturnine short-tempered splenetic sulky sullen testy touchy

Antonyms: balanced cheerful happy overjoyed