English Antonyms Practice Test 5

Vanquish : defeat thoroughly.
Surrender : give up or hand over (a person, right, or possession), typically on compulsion or demand.
Debase : reduce (something) in quality or value; degrade.
Destroy : end the existence of (something) by damaging or attacking it.
Ruin : the physical destruction or disintegration of something or the state of disintegrating or being destroyed.

Antonym of Vanquish is Surrender