1. (a.) ill-tempered; impatient; easily inflamed or exasperated; as, an irritable temper\.

2. (a.) Very susceptible of anger or passion

3. (a.) Endowed with irritability; susceptible of irritation; capable of being excited to action by the application of certain stimuli.

4. (a.) Susceptible of irritation; unduly sensitive to irritants or stimuli. See Irritation, n., 3.

aggressive agitable all nerves allergic anaphylactic apprehensive bad-tempered bearish bellicose belligerent bickering bitchy cankered cantankerous choleric churlish combative crabbed crabby cranky cross cross-grained crotchety crusty cussed delicate disagreeable disputatious divisive dyspeptic edgy emotional emotionally unstable empathetic empathic eristic eruptive excitable explosive factional factious fearful feisty fractious fretful frightened goosy grouchy gruff high-mettled high-spirited high-strung highly emotional huffish huffy hyperesthetic hyperpathic hypersensitive ill-humored ill-tempered impatient inflammable irascible itchy litigious mean mettlesome moody nerves on edge nervous nervy on edge ornery overrefined oversensible oversensitive overstrung overtender panicky partisan passible peevish perturbable perverse pettish petulant pindling polarizing polemic prickly pugnacious quarrelsome querulous raspy refined responsive sensitive short-tempered shrewish skittish snappish snappy spiteful spleeny splenetic startlish supersensitive sympathetic tactful temperamental tender testy tetchy thin-skinned ticklish touchy ugly uneasy volcanic waspish whiny wrangling