Definition of "beastly"

beastly

/ˈbiːstli/

adjective
comparative beastlier or more beastly, superlative beastliest or most beastly
1. (UK) Pertaining to, or having the form, nature, or habits of, a beast.
2. (UK) Similar to the nature of a beast; contrary to the nature and dignity of human beings.
3. (UK, dated) Abominable; very unpleasant.
  Quotations
  And all the time, whenever we went to the Cedars, there was all sorts of silly fuss going on about the beastly wedding; boxes coming from London with hats and jackets in, and wedding presents—all glassy and silvery, or else brooches and chains—and clothes sent down from London to choose from.
  1904, Edith Nesbit, The New Treasure Seekers, Chapter 1
4. Powerful, having a powerful appearance (of computing hardware)
  Quotations
  In addition to a Core i7-860 with a full-sized heatsink and 4GB of DDR3 RAM, the company showed its SUGO SG07 housing today's most beastly graphics card, the dual-GPU Radeon HD 5970, which is about 30cm long.
  2010 January 11, Matthew DeCarlo, “Silverstone mini-ITX case can fit Radeon HD 5970”, in TechSpot
  A very big, very black, and very beastly Hummer H2, Spotted in China in in the rain the great city of Zigong in Sichuan Province.
  2014, March 21, Tycho de Feijter, “Hummer H2 is a Big Black Beast in the Rain in China”, CarNewsChina.com
  Huawei’s Mate 20 phones have instantly become the best iPhone XS rivals out there, at least on paper, and the high-end model is easily the most beastly Android phone the world has seen so far.
  2018 October 16, Chris Smith, “Huawei just unveiled the most beastly Android phone the world has ever seen”, in BGR
adverb
comparative more beastly, superlative most beastly
1. Like a beast; brutishly.
  Quotations
  Beastly he threwe her downe, ne car'd to spill / Her garments gay with scales of fish that all did fill.
  1590, Edmund Spenser, “Book III, Canto VIII”, in The Faerie Queene. […], London: […] [John Wolfe] for William Ponsonbie
  They have insulted me most beastly. Moreover, they are, everyone of them, black-satan filthmen.
  1901, The Literary World, volume 63, page 35
  The baths were mostly tiled showers, with an endless variety of spouting mechanisms, but with one definitely non-Laodicean characteristic in common, a propensity, while in use, to turn instantly beastly hot or blindingly cold upon you, depending on whether your neighbor turned on his cold or his hot to deprive you of a necessary complement in the shower you had so carefully blended.
  1955, Vladimir Nabokov, Lolita