| Siberian(adjective, cool, severe, keen, sharp) |
| biting(adjective, cool, severe, keen, sharp) |
| frigid |
| icy |
| numbing(adjective, cool, severe, keen, sharp) |
| Antarctic(adjective, cool, cold, raw, frosty) |
| northern(noun, adjective, adverb, north, northerly) |
| polar |
| brumal(adjective, cool, severe, keen, sharp) |
| algid(adjective, cool, severe, keen, sharp) |
| hibernal(adjective, cold) |
| hyperboreal(adjective, cold, frosty, chill, chilly) |
| keen(adjective, cool, severe, sharp, intense) |
| nipping(adjective, cool, severe, keen, sharp) |
| north-polar |
| penetrating(adjective, cool, severe, keen, sharp) |
| piercing(adjective, cool, severe, keen, sharp) |
| sharp(adjective, cool, severe, keen, intense) |
| shivery(adjective, cool, severe, keen, sharp) |
| snappy(adjective, cool, severe, keen, sharp) |