. frustrate, spoil, foil, defeat; dash, discomfit, ba(u)lk, thwart, bring to naught/nothing, scotch, play havoc (with), knock (a plan, etc.) on the head, put paid to; (неутрализирам
) neutralize, counteract; ~ плановете на
discomfit s.o., put a spoke in s.o.’s wheel, spike s.o.’s guns;
~ се come to naught/nothing, разг. come a cropper, go down the drain.