hyperborean (n.)

• antarctic
• arctic
• austral
• bitter
• cold
• crisp
• cutting
• east
• easterly
• freezing
• icy
• keen
• nipping
• north
• northeast
• northerly
• northern
• northwest
• occidental
• oriental
• pinching
• raw
• sharp
• south
• southeast
• southerly
• southwest
• southwestern
• untouchable
• west
• westerly
• western