interjection (Q15578)

An interjection is a part of speech, typically brief in form, such as one syllable or word, whose members are used most often as exclamations or parts of an exclamation. An interjection, typically expressing an emotional reaction, often with respect to an accompanying sentence, is not syntactically related to other accompanying expressions, and may include a combination of sounds not otherwise found in the language [Crystal 1997,200].