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are words or phrases used to exclaim or protest or command. They sometimes stand by themselves, but they are often contained within larger structures.
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Conventions like Hi, Bye and Goodbye are interjections, as are exclamations like Cheers! and Hooray!. In fact, like a noun or a pronoun, 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 profanitytakes 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!".
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Several English interjections contain sounds that do not (or very rarely) exist in regular English phonological inventory.
For example:
Ahem is common in American English, some British dialects, and in other languages, such as German.
Oops, an interjection made in response to the observation of a minor mistake, usually written as "Oops!" or "Whoops!"
Psst [psː] ("here!"), is another entirely consonantal syllable-word, and its consonant cluster does not occur initially in regular English words.
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Shh [ʃːː] ("quiet!") is an entirely consonantal syllable.
Tut-tut [ǀ ǀ] ("shame ."), also spelled tsk-tsk, is made up entirely of clicks, which are an active part of regular speech in several African languages.
Ugh [ʌx] ("disgusting!") ends with a velar fricative consonant, which otherwise does not exist in English, though is common in languages like Spanish, German, and Gaelic.
Whew or phew ("what a relief!"), also spelled shew, this sound is a common phoneme in such languages as Suki (a language of New Guinea) and Ewe and Logba(both spoken in Ghana).
Yeah ("yes") ends with the short vowel [ɛ], or in some dialects [æ], neither of which are found at the end of any regular English words.
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