frustrate Synonyms

baffle foil thwart crucify torment defeat spoil scotch queer cross bedevil bilk undo rag stymie sabotage quash prevent obstruct inhibit retard ruin scupper scuttle hold up stop foul up to balk wreck impede hinder dash curb crush counteract counter check block blight bar delay derail destroy hamstring hamper halt forestall dun disrupt dishearten