Diabolical

/[ˌdaɪəˈbɑlɪkəɫ]/ adj, slang

Definitions

Adjective
  1. 1
    Of or concerning the devil: devilish, satanic.

    "[…] the many diabolical names assigned to boiling springs and to torrents that become dangerously swollen. In California the boiling springs called 'Devil's Tea-kettle' and 'Devil's Mush-pot' repeat the 'Devil's Punch-bowls' of Europe[…]"

  2. 2
    Extremely wicked or cruel.

    "a diabolical plan"

  3. 3
    (Devilishly) cunning or devious. slang
  4. 4
    Crazy, wild (sometimes especially due to being unexpected or surprising). slang
Adjective
  1. 1
    extremely evil or cruel; expressive of cruelty or befitting hell wordnet
  2. 2
    showing the cunning or ingenuity or wickedness typical of a devil wordnet

Etymology

From diabolic + -al.

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