These are the meanings of the letters TSFA when you unscramble them.
            
                
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                    Fast (a.)
                    
                        In a fast or rapid manner; quickly; swiftly; extravagantly;   wildly; as, to run fast; to live fast.
                    
                 
                
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                    Fast (a.)
                    
                        In a fast, fixed, or firmly established manner; fixedly;   firmly; immovably.
                    
                 
                
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                    Fast (n.)
                    
                        That which fastens or holds; especially, (Naut.) a mooring   rope, hawser, or chain; -- called, according to its position, a bow,   head, quarter, breast, or stern fast; also, a post on a pier around   which hawsers are passed in mooring.
                    
                 
                
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                    Fast (n.)
                    
                        The shaft of a column, or trunk of pilaster.
                    
                 
                
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                    Fast (v.)
                    
                        Firm against attack; fortified by nature or art; impregnable;   strong.
                    
                 
                
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                    Fast (v.)
                    
                        Firm in adherence; steadfast; not easily separated or   alienated; faithful; as, a fast friend.
                    
                 
                
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                    Fast (v.)
                    
                        Firmly fixed; closely adhering; made firm; not loose,   unstable, or easily moved; immovable; as, to make fast the door.
                    
                 
                
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                    Fast (v.)
                    
                        Given to pleasure seeking; disregardful of restraint;   reckless; wild; dissipated; dissolute; as, a fast man; a fast liver.
                    
                 
                
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                    Fast (v.)
                    
                        Moving rapidly; quick in mition; rapid; swift; as, a fast   horse.
                    
                 
                
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                    Fast (v.)
                    
                        Not easily disturbed or broken; deep; sound.
                    
                 
                
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                    Fast (v.)
                    
                        Permanent; not liable to fade by exposure to air or by   washing; durable; lasting; as, fast colors.
                    
                 
                
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                    Fast (v.)
                    
                        Tenacious; retentive.
                    
                 
                
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                    Fast (v. i.)
                    
                        A time of fasting, whether a day, week, or longer time; a   period of abstinence from food or certain kinds of food; as, an annual   fast.
                    
                 
                
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                    Fast (v. i.)
                    
                        Abstinence from food; omission to take nourishment.
                    
                 
                
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                    Fast (v. i.)
                    
                        To abstain from food; to omit to take nourishment in whole   or in part; to go hungry.
                    
                 
                
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                    Fast (v. i.)
                    
                        To practice abstinence as a religious exercise or duty; to   abstain from food voluntarily for a time, for the mortification of the   body or appetites, or as a token of grief, or humiliation and   penitence.
                    
                 
                
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                    Fast (v. i.)
                    
                        Voluntary abstinence from food, for a space of time, as a   spiritual discipline, or as a token of religious humiliation.
                    
                 
                
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                    fats (unknown)
                    
                        Sorry. I don't have the meaning of this word.