These are the meanings of the letters MUTS when you unscramble them.
            
                
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                    Must (n.)
                    
                        Mustiness.
                    
                 
                
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                    Must (n.)
                    
                        The expressed juice of the grape, or other fruit, before   fermentation.
                    
                 
                
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                    Must (v. i. / auxiliary)
                    
                        To be morally required; to be necessary or   essential to a certain quality, character, end, or result; as, he must   reconsider the matter; he must have been insane.
                    
                 
                
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                    Must (v. i. / auxiliary)
                    
                        To be obliged; to be necessitated; --   expressing either physical or moral necessity; as, a man must eat for   nourishment; we must submit to the laws.
                    
                 
                
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                    Must (v. t. & i.)
                    
                        To make musty; to become musty.
                    
                 
                
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                    muts (unknown)
                    
                        Sorry. I don't have the meaning of this word.
                    
                 
                
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                    Smut (v. i.)
                    
                        To gather smut; to be converted into smut; to become   smutted.
                    
                 
                
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                    Smut (v. i.)
                    
                        To give off smut; to crock.
                    
                 
                
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                    Smut (v. t.)
                    
                        An affection of cereal grains producing a swelling which   is at length resolved into a powdery sooty mass. It is caused by   parasitic fungi of the genus Ustilago. Ustilago segetum, or U. Carbo,   is the commonest kind; that of Indian corn is Ustilago maydis.
                    
                 
                
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                    Smut (v. t.)
                    
                        Bad, soft coal, containing much earthy matter, found in   the immediate locality of faults.
                    
                 
                
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                    Smut (v. t.)
                    
                        Foul matter, like soot or coal dust; also, a spot or soil   made by such matter.
                    
                 
                
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                    Smut (v. t.)
                    
                        Obscene language; ribaldry; obscenity.
                    
                 
                
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                    Smut (v. t.)
                    
                        To blacken; to sully or taint; to tarnish.
                    
                 
                
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                    Smut (v. t.)
                    
                        To clear of smut; as, to smut grain for the mill.
                    
                 
                
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                    Smut (v. t.)
                    
                        To stain or mark with smut; to blacken with coal, soot, or   other dirty substance.
                    
                 
                
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                    Smut (v. t.)
                    
                        To taint with mildew, as grain.
                    
                 
                
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                    Stum (n.)
                    
                        Unfermented grape juice or wine, often used to raise   fermentation in dead or vapid wines; must.
                    
                 
                
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                    Stum (n.)
                    
                        Wine revived by new fermentation, reulting from the admixture   of must.
                    
                 
                
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                    Stum (v. t.)
                    
                        To renew, as wine, by mixing must with it and raising a   new fermentation.