1. not connected or joined together

1. past tense of uncouple: to disconnect or separate things that were joined

Examples

• The train cars remained uncoupled in the rail yard.
• The engineer uncoupled the locomotive from the freight cars.
• The uncoupled trailer sat alone in the parking lot.
• She uncoupled the garden hose from the spigot.
• The uncoupled systems operated independently.
• He uncoupled the boat trailer from his truck.
• The uncoupled components were stored separately.