be in bed with
US /bi ɪn bɛd wɪð/
UK /bi ɪn bɛd wɪð/
1.
to be having a sexual relationship with someone
:
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Rumor has it that he's in bed with his secretary.
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They've been in bed with each other for months.
2.
to be closely involved or secretly cooperating with someone, especially in a dishonest or unethical way
:
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The politician was accused of being in bed with big corporations.
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Many believe the regulatory body is in bed with the industry it's supposed to oversee.