freezing cold
ultracold
icy
gelid
glacial
polar
frigid
arctic
supercold
chilling
frore
brass monkeys
freezing
Baltic
chanking
cold enough to freeze the balls off a brass monkey
perishing
brick
bust ass cold
overcold
bone-chilling
cold as balls
cold as a well-digger's arse
cold as death
cold as ice
cold as a witch's kiss
cold as a witch's tit
brass monkey
cryo-
psychrosensitive
freeze
iciness
skinning
gelidity
chill
cooold
cold as charity
stone-cold
bitterness
psychro-
taters in the mould
taters
cryesthesia
algor
freezingly
nithered
howler
frostiness
frost
cryopathy