detach

Concise Oxford English Dictionary © 2008 Oxford University Press:
detach/dɪˈtatʃ/

▶verb

• 1 disengage (something) and remove it.

• 2 (detach oneself from) leave or separate oneself from (a group or place).

  ■ (be detached) Military be sent on a separate mission.

– derivatives
detachability noun,
detachable adjective.

– origin C16 (in the sense ‘discharge a gun’): from Fr. détacher, from des- (expressing reversal) + attacher ‘attach’.