interjection
in.ter.jec.tion \.int-*r-'jek-sh*n\ n 1a: the act of uttering exclamations : EJACULATION 1b: the act of putting in between : INTERPOSITION {~ of new issues} 2: something that interrupts 3a: an ejaculatory word (as Wonderful) or form of speech (as ha ha ) 3b: a cry or inarticulate utterance (as ouch) expressing an emotion