freezing
frore
brass monkeys
hare
algid
frigid
glacial
cold as a witch's tit
cold as ice
cold as death
cold as a well-digger's arse
bone-chilling
cold as balls
nippy
brass monkey
cold as a witch's kiss
chilling
icy
skinning
arctic
polar
gelid
brumal
sub-zero
winterish
frosty
cold enough to freeze the balls off a brass monkey
iced
bust ass cold
chanking
achill
brick
perishing
Baltic
hibernal
cooold
taters in the mould
hiemal
taters
stone cold
frigolabile
psychrosensitive
blizzardous
backendish
prewinter
wintry
cold as charity
supercold
overwinter
chillish