Interjections are a group of words which are commonly used in spoken language to express emotions, reactions and so on. It is generally difficult to categorise them into one of the eight major word classes.
Examples include the following:
- oh, wow, aha, ouch, tut-tut, ugh, oops, humph, hooray, yuck, whew, yikes, eek
Interjections can occur on their own, or in sequence (e.g. oh wow), and can also be attached to a sentence. These examples are all from informal conversations: