/
rɪˈvəːs/
v.
    - move backwards. 
▸(of an engine) work in a contrary direction.
 - turn the other way round or up or inside out.
 - make the opposite of what it was:
 the damage done to the ozone layer may be reversed.
 ▸swap (positions or functions).
 - Law  revoke or annul (a judgement by a lower court or authority).
 
adj.
  - going in or turned towards the opposite direction. 
▸operating or behaving in a way opposite to that which is usual or expected.
 - Geology  denoting a fault in which a relative downward movement occurred in the strata on the underside of the fault plane.
 
n.
     - a complete change of direction or action. 
▸American Football  a play in which the direction of attack is reversed.
 - reverse gear.
 - 
(the reverse)
 the opposite to that previously stated.
 - a setback or defeat.
 - the opposite side or face to the observer. 
▸a left-hand page of an open book, or the back of a loose document.
 ▸the side of a coin or medal bearing the value or secondary design.
 
Phrase
- reverse arms
 hold a rifle with the butt upwards.  - reverse the charges
 make the recipient of a telephone call responsible for payment. 
Derivative
- reversely adv.
  - reverser n.
 
Etymology
ME: from OFr. revers, reverse (n.), reverser (v.), from L. revers-, revertere ‘turn back’.