Interjection
In grammar, an interjection or exclamation is a word used to express a particular emotion or sentiment on the part of the speaker (although most interjections have clear definitions. Filled pauses such as uh, er, um are also considered interjections. Interjections are often placed at the beginning of a sentence.
An interjection is sometimes expressed as a single word or non-sentence phrase, followed by a punctuation mark. The isolated usage of an interjection does not represent a complete sentence in conventional English writing. Thus, in formal writing, the interjection will be incorporated into a larger sentence clause.
Interjection as a figure of speech refers to the use of one word. For example, lawyers in the United States of America traditionally say: Objection! or soldiers: Fire!.
Examples in English
Conventions like Hi!, Bye! and Goodbye! are interjections, as are exclamations like Cheers! and Hooray!. They are very often characterized by exclamation marks depending on the stress of the attitude or the force of the emotion they are expressing. Well (a short form of "that is well") can also be used as an interjection: "Well! That's great!" or "Well, don't worry." Much profanity takes the form of interjections. Some linguists consider the pro-sentences yes, no, amen and okay as interjections, since they have no syntactical connection with other words and rather work as sentences themselves. Expressions such as "Excuse me!", "Sorry!", "No thank you!", "Oh dear!", "Hey that's mine!", and similar ones often serve as interjections. Interjections can be phrases or even sentences, as well as words, such as "Oh!" "Pooh!" "Wow!" or "sup!".
