Main Entry: ¹thwart

Pronunciation: \ˈthwȯrt\

Function: transitive verb

Etymology: Middle English thwerten, from thwert, adverb

Date: 13th century

1 a : to run counter to so as to effectively oppose or baffle : contravene b : to oppose successfully : defeat the hopes or aspirations of
2 : to pass through or across

synonyms see frustrate

— thwart·er noun