Multiple choice Directions: Choose the option which is not the synonym of the word in question: kibosh stop thwart braggart halt Reveal answer Fill a bubble to check yourself C Correct answer Explanation The correct answer is 'braggart' because it means a boastful person, which is completely unrelated to 'kibosh'. Kibosh means to put an end to or stop something, making 'stop', 'thwart', and 'halt' all valid synonyms.