Monkey business
If children get up to monkey business, they are behaving naughtily or mischievously. This is the same as 'monkeying around'. Moral fibre Moral fibre is the inner strength to do what you believe to be right in difficult situations Example: He lacked the moral fibre to be leader (In American English the correct spelling is 'fiber'.) Moral high ground If people have/take/claim/seize, etc, the moral high ground, they claim that their arguments, beliefs, etc, are morally superior to those being put forward by other people. More haste, less speed The faster you try to do something, the more likely you are to make mistakes. More heat than light If a discussion generates more heat than light, it doesn't provide answers, but does make people angry. More holes than Swiss cheese If something has more holes than a Swiss cheese, it is incomplete and lacks many parts. Mother wit Native intelligence; common sense Mountain to climb If you have a mountain to climb, you have to work hard or make a lot of progress to achieve something. Move mountains If you would move mountains to do something, you would make any effort to achieve your aim. When people say that faith can move mountains, they mean that it can achieve a lot.
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