"Undocked" means not connected or attached to a dock or a fixed location. It usually refers to devices or vehicles that are not currently linked or resting in a docking station or a specific place. Full definition
Pleasingly, each combatant is free to split up, and while getting a quarter of the Switch's diminutive screen makes for some tight - knit huddles, it's gratifying to see unhindered performance, even in undocked mode. (tech-gaming.com)
Maybe even better resolutions for the Nintendo Switch when undocked! (catwithmonocle.com)
This feature is in addition to the wireless local play, which lets undocked Switch consoles play together. (growngaming.com)