hold one's tongue
argue round and round
keep mum
evasive
drop the topic
put out of one's mind
draw a veil over
avoid
silence
get off of someone's cloud
shut up
close the book on
keep one's distance
mince words
hold one's peace
ostracize
go there
ostracise
guard one's tongue
bite one's lip
bar off
bat away
hold one's fire
bite one's tongue
antipolitics
beat around the bush
don't get someone started
keep quiet
dry up
hear the end of it
skate over
button
disimagine
sing small
wind one's neck in
shut it
shut one's trap
guff
chit-chat
stop talking
discretion is the better part of valour
shut one's gob
interpose
natter
save one's breath to cool one's porridge
shut one's face
shut one's mouth
muzzle
gag
button it
kibitz
cut someone cold
belt up
zip one's lip
let go
give the go-by
branch off
pipe down
choops
hedge
talk cock
get off someone's case
keep one's cards close to one's chest
rame
save one's breath
unprompted
derail
send away
derailment
dismiss
flap one's gums
ob-
abstain
forbear
dirty word
unmentionable
drop
deflect
hold back
leave alone
send packing
make noises
close up
spit it out
be quiet
chat
gaffle
breast one's cards
button up
dummy up
lip service
clam up
tiptoe around
cut out
antislang