An interjection is a part of speech that usually has no grammatical connection with the rest of the sentence and simply expresses emotion 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 generally uninflected function words and have sometimes been seen as sentence-words, because they can replace or be replaced by a whole sentence (they are holophrastic). Sometimes, however, interjections combine with other words to form sentences, but not with finite verbs.

Interjections are used when the speaker encounters events that cause these emotions — unexpectedly, painfully, surprisingly, or in many other sudden ways. However, several languages have interjections that cannot be related to emotions.

The word "interjection" literally means "thrown in between" from the Latin inter ("between") and iacere ("throw").

Interjections are words used to express strong feeling or sudden emotion. They are included in a sentence usually at the start to express a sentiment such as surprise, disgust, joy, excitement or enthusiasm.

Interjections show excitement, and emotion. They generally come at the start of a sentence followed by an exclamation point, or by a comma if the feeling's not as strong.

Some examples of interjections are, "Oh!" and "Wow!", etc.

See also

• Ejaculation (grammar)
• Discourse marker
• Filler (linguistics)
• Aizuchi
• Words without vowels
• List of interjections in other languages at Wiktionary.''
  • Re, bre, moré (with many variants) is an interjection common to languages of the Balkan linguistic union and some neighboring languages