Crossword clues for Fastnesses.:FASTNo-food diet?FAST___ one (swindle)FASTNot eatFASTLike a cheetahFASTBall from ClemensFASTSPrepares for surgery, likelyFASTSPrepares for a blood test, likelyFASTSDoesn't take anything inFASTSpeedyFASTLike a clipper, in its dayFASTTake part in a hunger strikeFASTDiet to the max?FASTSForgoes foodFASTEDDidn't take sides, e.g.FASTSPeriods of self-denialFASTKind of trackFASTSGoes on a hunger strikeFASTBreakneckFASTWasting no timeFASTGo on a hunger strikeFASTEschew ediblesFASTCut calories completelyFAST___ Eddie FelsonFASTLike Randy Johnson's pitchesFASTMore than dietFASTSecureFASTAllegro, in musicFAST____ Eddie FelsonFASTWell-connected?FASTSGoes on strike, in a wayFASTSObservances on Yom Kippur and Tisha B'AvFASTOn the doubleFASTQuickFASTGotta go ___! (Sonic the Hedgehog catchphrase)FASTLike Flo-JoFASTPut nothing awayFASTRefrain from eatingFASTPrepare for surgery, sayFASTYom Kippur ritualFASTCrash dietFASTSPrepares for some blood work, maybeFASTTake nothing inFASTLike a blurFASTEDObserved Yom KippurFASTSecurelyFASTSProtestors' deprivationsFAST___ Times at Ridgemont High (Sean Penn comedy)FASTLike Usain Bolt, aptlyFASTFleet-footedFASTIn no time