splitting the party

verb. When a party of characters decides to separate, usually to cover more ground, but sometimes because of divergent strategies and/or heated debate (PvP).

Usually denotes a problematic within roleplaying sessions, as splitting the party usually wastes someone's time unless a DM is ballsy enough to run two scenes in parallel.

Scooby Doo has hundreds of examples of "splitting the party," for example:

Velma Dinkley: trying to find Shaggy and Scooby I think we should split up.
Fred Jones: Good Idea!
Daphne Blake: I'll go with Beau.
Fred Jones: frowning Bad idea!