What does "kiss off" mean?
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Dismiss or reject, as in He kissed off their offer. This usage alludes to kissing something goodbye [Slang; c. 1900]
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Be forced to give up or regard as lost, as in You can kiss off that promotion. [Slang; late 1940s]
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Get out, go away, as in She told the reporters to kiss off. [Slang; early 1990s]
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