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1. To increase the sexual appeal or content of someone or something: The producer sexed up the music video with scantily clad dancers. Because the club was bland, the owners decided to sex it up.
2. Chiefly British Slang To increase the appeal or attractiveness of something; embellish something: The committee sexed up the report with suggestions of conspiracy. Our website is boring—what if we sex it up with funky icons?
3. Vulgar Slang To arouse someone sexually.