Using hyphens with prefixes
Prefixes like ‘ex’ and ‘anti’ usually have a hyphen after them before the word they’re attached to:
The government tried to reduce the local anti-Semitic feeling.
Sally wasn’t looking forward to seeing her ex-boyfriend.
The guest speaker last night was interrupted mid-speech.
Words that are made up of an individual letter and a word also need a hyphen between them:
I would like to buy that T-shirt please.
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