uncouple

[ uhn-kuhp-uh l ]

/ ʌnˈkʌp əl /

to release the coupling or link between; disconnect; let go: to uncouple railroad cars.

to end (a romantic relationship or marriage): Their marriage was uncoupled by financial problems.

to become unfastened; let go: The glider uncoupled from the tow plane.

to end a romantic relationship or marriage: My sister and her boyfriend have uncoupled after ten years together.

(of a romantic relationship or marriage) to end.

Origin of uncouple

1300–50; Middle English unco(u)plen; see un-², couple

As we near the bandits, uncouple the train, put on the brakes and stop the coaches.

The Broncho Rider Boys with Funston at Vera Cruz |Frank Fowler
The linch-pin of the parlour-car has become over-heated, and we had to uncouple the car and leave it behind.

Dr. Dumany's Wife |Mr Jkai
Andrews told his engineer to uncouple the baggage car from the box car, and then wait for him.

Stories Of Georgia |Joel Chandler Harris
But the law of New York State says that married couples shall not uncouple amicably and intelligently.

We Can't Have Everything |Rupert Hughes

I would give a signal for him to uncouple his engine and follow at full speed.

Where Strongest Tide Winds Blew |Robert McReynolds

uncouple

/ (ʌnˈkʌpəl) /

to disconnect or unfasten or become disconnected or unfastened

(tr) to set loose; release