silence
negation
hold one's peace
no speaks
bite one's lip
bite one's tongue
gag
inarticulate
nonutterance
unarticulate
keep mum
umlessness
refrainment
antiverbal
whillywha
ignorization
put up or shut up
rejection
save one's breath
er
unamusement
avoidance
underspeak
delivery
save one's breath to cool one's porridge
speech
tongue
tongue-tie
unconversationally
unspeakingness
hold one's tongue
jargoning
agrammatism
keep one's mouth shut
ignortion
don't get someone started
muzzle
shut up
shut one's gob
objection
shut one's trap
mumble
mouthful of marbles
shut one's face
shut one's mouth
jump in
nonspeak
refraining
ostracise
harangue