The Collaborative International Dictionary
Can't
Can't \Can't\ A colloquial contraction for can not.
Douglas Harper's Etymology Dictionary
can't
1706, contraction of cannot.
Wiktionary
can't
contraction 1 cannot; is unable to; does not have the ability to 2 is forbidden to; is not permitted to 3 Logically impossible. Logical negative conclusion. (Often with "be")
Usage examples of "can't".
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