ire·ful \ˈī(ə)rfəl, ˈīəf-\adjective Etymology: Middle English, from ire + -ful 1.: full of ire : marked by ire : angry, wrathful < an ireful mood > 2.: given to ire : easily angered : irascible, choleric < an ill-tempered ireful old man > • ire·ful·ly\-fəlē, -li\adverb • ire·ful·nessnoun-es