Answer:

BAN

AnswerCrossword Clue
BANForbid
BANProhibit
BANTaboo
BANProhibition
BANOutlaw
BANProscribe
BANBig soda ... (failed Bloombergian initiative)
BAN-
BANDisallow
BANUncompromising law
BANProscription
BANDon't allow
BANRule inadmissible
BANCriminalize
BANInterdict
BANSure competition
BANRender unreadable, maybe
BANPut a stop to
BANSure alternative?
BANPut a moratorium on
BANDeclare off-limits
BANLegally stop
BANSay "No more"
BANIt may be lifted
BANArrid competitor
BANBlock
BANMake taboo
BANMaker of Intensely Fresh deodorant
BANBlackball
BANShut out
BANMake illegal
BANSecret alternative
BANArrid rival
BANRoll-on name
BANEmbargo
BANInterdiction
BANNuclear treaty result
BANKeep out
BANSure alternative
BANBlackout