crossposting

Verb

crosspost (third-person singular simple present crossposts, present participle crossposting, simple past and past participle crossposted)

1. (Internet, ambitransitive) To post (a message) to multiple newsgroups or forums simultaneously.
   • but it sounds like a rationalization to me. I'm cross-posting this to net.women to see how women feel about it.1983 December 20, George Sicherman, “Relationships and Later Lovers”, in net.singles (Usenet), retrieved 20 Jan 2026
2. (indexing, especially physically) To post an entry (in a book index or other index) such that no matter which word a user looks under, they will find the relevant entry (see examples).

See all 4 meanings of crosspost