interparty

adjective

in·​ter·​par·​ty ˌin-tər-ˈpär-tē 

variants or inter-party

: occurring between or involving two or more parties and especially political parties

Democrat Bruce Babbitt and Republican Pete du Pont invented the do-it-yourself presidential debate … as a way of calling attention to their long shot candidacies. It may have been a gimmick, but their interparty face-off produced a vibrancy rarely matched in a campaign season devoid of transcendent issues.

—Walter Shapiro

Word History

First Known Use

1854, in the meaning defined above