ostracise
ostracize
shirk
keep at arm's length
nonconfrontation
gag
muzzle
hedge
don't get someone started
bite one's tongue
silence
get off of someone's cloud
hold one's tongue
bite one's lip
antisocial
keep mum
give the go-by
antipolitics
anticonfrontational
send away
drop
send packing
unmentionable
stonewall
dismiss
leave alone
anticontact
end run
put someone on ice
evasive
discretion is the better part of valour
antiverbal
skate over
draw a veil over
hold one's peace
chat
at arm's length
avoid
iggy
bat away
zip one's lip
argue round and round
fight shy
unprompted
cede the field
hold
keep one's distance
umlessness
cone of silence
deflect