crabbiest

acid acrid acrimonious awkward bad-tempered blunt brusque captious choleric churlish cranky cross crotchety crusty cynical difficult dour fretful gloomy glum grouchy harsh huffy ill-humored ill-tempered irascible irritable misanthropic morose nasty-tempered peevish perverse petulant prickly saturnine snappish snappy sour splenetic sulky sullen surly tart testy tough trying unsociable

happy

acid acrid acrimonious awkward bad-tempered blunt brusque captious choleric chuffy churlish crabbed cranky cross crotchety crusty cynical difficult dour fretful gloomy glum grouchy harsh huffy ill-humored ill-tempered irascible misanthropic morose mumpish nasty-tempered peevish perverse petulant prickly saturnine snappish sour splenetic sulky sullen surly tart testy tough trying unsociable

amiable good-humored good-natured happy pleasant sweet