be with

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be with (third-person singular simple present is with, present participle being with, simple past was with or were with, past participle been with)

1. (euphemistic, transitive) To have sex with.

   We dated for almost a year, but I've never been with him.

2. (transitive) To date or be boyfriend/girlfriend with.

   I've been with her for almost a year now.

3. (transitive) To agree with someone.

   I came in here disagreeing, but I've changed my mind, and now I'm with you on this.

4. (transitive) To understand someone's point or intention.

   I'm sorry; I'm not with you on this point.

5. (slang or African-American Vernacular) To be down with (something); believe in, like, or espouse.

   You know I ain't with using drugs.

   You like robbing banks?
   Nah, I ain't with that.

• (to have sex with): go to bed with, go with, sleep with; see also Thesaurus:copulate with
• (to date): go out with, go steady, go with
• (to agree with): me too, take the point
• (to understand someone's point): take the meaning, take the point