overturn

the act of upsetting something; "he was badly bruised by the upset of his sled at a high speed"

an improbable and unexpected victory; "the biggest upset since David beat Goliath"

turn from an upright or normal position; "The big vase overturned"; "The canoe tumped over"

cause to overturn from an upright or normal position; "The cat knocked over the flower vase"; "the clumsy customer turned over the vase"; "he tumped over his beer"

rule against; "The Republicans were overruled when the House voted on the bill"

cause the downfall of; of rulers; "The Czar was overthrown"; "subvert the ruling class"

cancel officially; "He revoked the ban on smoking"; "lift an embargo"; "vacate a death sentence"

change radically; "E-mail revolutionized communication in academe"