Pronunciation

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Singular
mug

Plural
mugs

  1. (countable) A mug is a large cup for hot drinks, with a handle but not used with a saucer.
    He drank his hot coffee from an old mug.
  2. (slang) A mug can also be a person's face.
    He had an ugly mug.
  3. (slang) A person who can be tricked easily can be called a mug.
    The teacher was a mug – he believed my excuse.
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Plain form
mug

Third-person singular
mugs

Past tense
mugged

Past participle
mugged

Present participle
mugging

  1. (transitive) To mug someone is to rob them, to steal from them.
    He hid in a doorway and planned to mug the next person who walked past.