repress, squash, defeat
decline, lessen, dull, decrease, reduce, diminish, dwindle, slow, quell, subdue, wane, taper
seize, obtain, acquire, occupy, overrun, annex, win, defeat, overcome, overthrow, beat, master, crush, overpower, quell
Quell is a verb.
The police tried to quell the riot.To quell is to quieten and control.When police tried to quell the disturbance, onlookers incited the crowd.
The police were called out to quell the riot.
"Police were sent to quell the riot."
To quell bleeding, cauterize the wound.
The police had been called in to quell a minor disturbance.
The police were able to quell the riot.
overcome, conquer, defeat, command, tame, quiet
Do you mean the 2nd Quarter Quell or the Quarter Quell in the 2nd book (which is called Catching Fire). The 2nd Quarter Quell was double the tributes (so instead of 24 tributes, there was 48). The Quarter Quell in Catching Fire was to use victors as tributes.
Quell your impulse to tie your sister's pigtails to the bedpost.