The hyphen is used join parts of some compound wordsin dividing a word at the end of a lineto show missing letters in contractionsin writing numbersto show possessionto join prefixes to root words (if the last letter of the prefix and the first letter of the suffix are the same)

The hyphen is used as an intermediate script.

Explanation: When a prefix precedes an acronym or a word that begins with a capital letter, you must write an intermediate script. Example, anti-Hittler.

It is also used when joining two prefixes associated with the same word, example pre- romantic.

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