verb (usedwithobject), an·ni·hi·lat·ed,an·ni·hi·lat·ing.

1. To reduce to utter ruin or nonexistence; destroy utterly: The heavy bombing almost annihilated the city.

2. To destroy the collective existence or main body of; wipe out: to annihilate an army.

3. To annul; make void: to annihilate a law.

4. To cancel the effect of; nullify.

5. To defeat completely; vanquish: Our basketball team annihilated the visiting team.

1350–1400; Middle English adnichilat( e) destroyed < Late Latin annihilātus brought to nothing,annihilated (past participle of annihilāre) ( Latinan-an-2+ nihil nothing + -ātus-ate1)


an·ni·hi·la·tive[uh-nahy-uh-ley-tiv], an·ni·hi·la·to·ry[uh-nahy-uh-luh-tawr-ee], adjective
un·an·ni·hi·lat·ed, adjective
un·an·ni·hi·la·tive, adjective
un·an·ni·hi·la·to·ry, adjective

1. ravage, devastate, desolate.
2. smash, obliterate, demolish.