Crossword clues for thwarts thwarts Crosses from east to west in the creative world Blocks, prevents Foils the plans of Frustrates Wiktionary thwarts n. (plural of thwart English) vb. (en-third-person singular of: thwart) Usage examples of "thwarts". I would I were rid of, as he thwarts me by presuming to see with his own eyes, not mine.