gag

[1]	silence , stifle , still , muffle , stop (up) , muzzle , quiet , curb , suppress , repress , restrain , throttle , strangle , check , inhibit , discourage
[2]	retch , choke , heave , gasp for air , struggle for breath , (US) keck
[3]	muzzle
[4]	choke , fret
[5]	muzzle
[6]	quip
[7]	choke , strangle , suffocate
[8]	choke
[9]	heave , retch