noun
a two-fold quantity or amount
verb
to make or become twice as much
adjective
consisting of two equal, identical, or similar parts or things
adverb
to twice the extent or degree
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The company reported a double increase in profits this quarter.
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I accidentally ordered a double cheeseburger instead of a single.
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I can't believe he double-crossed his own friend like that.
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She always goes the extra mile, it's like she has a double dose of determination.