in·ter·jec·tion
noun/ˌɪntəˈdʒekʃn/
/ˌɪntərˈdʒekʃn/
(grammar)- a short sound, word or phrase spoken suddenly to express an emotion. Oh!, Look out! and Ow! are interjections.
感叹词；感叹语 Word Originlate Middle English: via Old French from Latin interjectio(n-), from the verb interjicere, from inter- ‘between’ + jacere ‘to throw’.