overturn

(ōˌvər-tûrnˈ)

1. To cause to turn over or capsize; upset.
2. a. To cause the ruin or destruction of; overthrow. See Synonyms at overthrow.
   b. Law To invalidate or reverse (a decision) by legal means: “his continuing legal battles to overturn a draft-evasion conviction” (Robert Lipsyte).

1. The act or process of overturning.
2. The state of having been overturned.