abdicate

• Meaning  -  renounce; give up (position, right, or responsibility)

• Synonyms -  relinquish, renounce, reject, disclaim, cast off.

• Antonyms -  assert, assume, challenge, claim, defy, defend, hold, maintain, remain, retain, treasure, usurp

• Usage -  When Edward VII abdicated the British throne, he surprised the entire world.

• Remember -  ab (root ab means away as in abandon) + dic (dictatorship) + ate (to eat and hence reduce) : means to give away (or reduce) dictatorship and hence to give-up power.