quell 
/ˈkwɛl/ verb
quells; quelled; quell·ing /ˈkwɛl/ verb [+ obj] 1 : to end or stop (something) usually by using force
▪ Police quelled [=quashed] the riot. 2 : to calm or reduce (something, such as fear or worry)
▪ The president's remarks quelled [=eased] employees' fears.
▪ Police quelled [=quashed] the riot.
▪ The president's remarks quelled [=eased] employees' fears.
