This is one of our favorite words. You can use it to put an end to almost anything. Don't feel like going out tonight? Put the kibosh on it. Is your partner making plans you don't agree with? Put the kibosh on it. Don't want to do this job anymore? Put the kibosh on it. You can basically put the kibosh on anything - it's so useful. And yet almost everyone gets it wrong.
This word is not pronounced "ki-bosh". We know that's the way you and everyone else has said it for your whole life, but it's not right. It should be "key-bosh", which somehow just doesn't seem as good. Nobody really knows where the word came from; it started appearing in English during the 19th Century and is sometimes attributed to author Charles Dickens.