English

Verb

chat up ‎(third-person singular simple present chats up, present participle chatting up, simple past and past participle chatted up)

1. (transitive, idiomatic) To talk to (someone) in a friendly, open, or casual manner, sometimes also in a charming or affected manner, usually to curry favor, and sometimes flirtatiously with the intention of establishing a romantic or sexual encounter or relationship with that person.

   Have you been chatting up my girlfriend?

   He spent all evening chatting her up.