Webster's Revised Unabridged Dictionary · 1913

Beastly

Beastly (bēst"ly) , adjective

1.
Pertaining to, or having the form, nature, or habits of, a beast.
Beastly divinities and droves of gods. — Prior
2.
Characterizing the nature of a beast; contrary to the nature and dignity of man; brutal; filthy.
The beastly vice of drinking to excess. — Swift
3.
Abominable; as, beastly weather. [Colloquial English]