repel

Concise Oxford English Dictionary © 2008 Oxford University Press:
repel/rɪˈpel/

▶verb (repels, repelling, repelled)

• 1 drive or force back or away.

  ■ (of a magnetic pole or electric field) force (something similarly magnetized or charged) away.

• 2 be repulsive or distasteful to.

• 3 formal refuse to accept; reject.

• 4 (of a substance) resist mixing with or be impervious to.

– derivatives
repeller noun.

– origin ME: from L. repellere, from re- ‘back’ + pellere ‘to drive’.