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1. When refering to a female, beastly means she is just that. A beast you would not want to go anywhere near.

2. When referring to anything else, it simply means large or impressive.
1. I would not go near that beastly she-bitch, not even to talk to her hot friend!

2. That is one beastly truck you have there.
Beastly by JakeStar September 5, 2005
When someone does something that is so terribly disgusting it can be compared to beastiality.(having intercoarse with animals)
Kelly put a pineapple in the dirt then shoved it into her vagina! Thats beastly!
beastly by A lost purse November 5, 2010
To be the or close to the best at one particular subject, affair, fight, game, ordeal, etc.

Can be prounounced 'bestly', in comparison to the accepted pronunciation 'beestly'.
He is so beastly at everything, that everyone voted him to become king of the universe and everyone will behold his rule.
a bad ass villain from the popular 80's cartoon care bears
man beastly is so bad ass
beastly by beelzeboob October 7, 2006
used generally by the fashion elite and upperclasses, when something is truly horrendous sweetie...
oh that is simply beastly daahling stonewashed jeans and jacket are sooo over!!
beastly by princess yoyo February 18, 2004
it goes from fag, lame, cool, nice, saweet, awsome, and beastly. beastly is rarely used in that not much things are beastly
kid 1: dude im getting a XBOX 360

kid 2: dude thats beastly i got to come over and play it some time
beastly by Adam Spicer January 27, 2007