Answer: fast

AnswerCrossword Clue
FASTAbstain from food
FASTKind of food
FASTLike a shot
FASTMore than diet
FASTPrepare for surgery, perhaps
FASTSecurely tied
FASTIn no time
FASTTake nothing in
FASTRamadan ritual
FASTNo-food protest
FASTRamadan practice
FASTRitual abstinence
FASTTightly
FASTProtest of a kind
FASTLike some clocks
FAST.. food
FASTEschew edibles
FASTFirmly fixed
FASTGo on a hunger strike
FAST... one (swindle)
fastacting or moving with speed
FASTLike lightning
FASTSecure
FAST.... Eddie Felson
FASTOn the double
FASTQuick
FAST"He pulled a ... one!"
FAST.. Eddie Felson
FASTSecurely
FASTKind of track
FASTLike Carl Lewis
FASTLike Randy Johnson's pitches
FASTObserve Ramadan
FASTSwift
FASTGo hungry
FASTLike Usain Bolt
FASTEschew food
FASTObserve Ramadan, say
FASTCertain form of protest
FASTSpeedy