quell

1. (in literary) to reduce or stop unpleasant feelings such as fear, doubt, or worry => calm
   • ‘Jerry?’ she called, trying to quell the panic inside her.
2. quell something/somebody to stop something such as violent behaviour or protests
   • Extra police were called in to quell the disturbances.
   • (figurative) She started to giggle, but Bob quelled her with a look.
   • As the looting intensified, the president vowed to quell the violence by any means necessary.