inclement (adj.)
- algid
- arctic
- astringent
- austere
- bad
- biting
- bitter
- bleak
- blustery
- boreal
- bowelless
- brisk
- brumal
- brutal
- cold
- crisp
- cruel
- cutting
- dour
- extreme
- flinty
- frigid
- gelid
- glacial
- grim
- hard
- harsh
- heartless
- hibernal
- hiemal
- ice-cold
- icelike
- icy
- inexorable
- intemperate
- keen
- merciless
- nipping
- nippy
- numbing
- penetrating
- piercing
- pinching
- pitiless
- rainy
- raw
- relentless
- remorseless
- rigorous
- rough
- rugged
- ruthless
- severe
- sharp
- sleety
- slushy
- snappy
- squally
- stern
- stone-cold
- stormy
- stringent
- tempestuous
- uncompassionate
- unfeeling
- unforgiving
- ungentle
- unmerciful
- unpitying
- unremorseful
- unsparing
- unsympathetic
- unsympathizing
- unyielding
- violent
- wintery
- wintry