verb (used with object), un·cou·pled, un·cou·pling.

  1. to release the coupling or link between; disconnect; let go: to uncouple railroad cars.
  2. to end (a romantic relationship or marriage): Their marriage was uncoupled by financial problems.

verb (used without object), un·cou·pled, un·cou·pling.

  1. to become unfastened; let go: The glider uncoupled from the tow plane.
  2. to end a romantic relationship or marriage: My sister and her boyfriend have uncoupled after ten years together.
  3. (of a romantic relationship or marriage) to end.


  1. to disconnect or unfasten or become disconnected or unfastened
  2. (tr) to set loose; release

v.c.1300, from un- (2) “opposite of” + couple (v.). Cf. Middle Dutch ontcoppelen. Related: Uncoupled; uncoupling.

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