(1)easily aroused or excited; "a quick temper"; "a warm temper"
(2)容易に刺激を受ける、または興奮する
(3)easily irritated or annoyed; "an incorrigibly fractious young man"; "not the least nettlesome of his countrymen"
(4)容易にいらだつまたはいらいらさせられる
(1)