(a.) Inclined to resent; easily provoked to anger; irritable.

acerb acerbate acerbic acid acidic acidulent acidulous acrimonious aggravated agitated angry annoyed antagonistic beefing begrudging bellyaching bitching bitter bothered browned-off bugged burning burnt-up catty caustic chafed choleric complaining complaintful crabbing crabby cranky croaking disappointed discontented disgruntled displeased dissatisfied disturbed embittered envious exasperated faultfinding fretful furious galled griped griping grouchy grousing growling grumbling hostile incensed indignant irate irked irritated jealous malcontent malcontented miffed murmuring muttering nagging naggy nettled out of humor peeved peevish pettish petulant piqued provoked querulant querulous rancorous rankled rebellious resenting restive restless riled roiled ruffled shrewish sore spiteful splenetic stewing sulky troubled unaccepting unaccommodating uneasy unfulfilled ungratified unhappy unsatisfied upset vexed vindictive virulent vixenish vixenly whiny worked up