Thwart (verb)
ناکام بنا دینا، آڑا
prevent (someone) from accomplishing something.
Example: “he never did anything to thwart his father”
Synonyms: foil, frustrate, balk, stand in the way of, forestall, scotch, derail, smash, dash, stop
Antonyms: assist, facilitate
Betray (verb)
راز راش کرنا، دھوکہ دینا، دغا کرنا
expose (one’s country, a group, or a person) to danger by treacherously giving information to an enemy.
Example: “a double agent who betrayed some 400 British and French agents to the Germans”
Synonyms: break one’s promise to, be disloyal to, be unfaithful to, break faith with, play someone false, fail
Antonyms: be loyal to