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diabolical

American  
[dahy-uh-bol-i-kuhl] / ˌdaɪ əˈbɒl ɪ kəl /
Also diabolic

adjective

  1. having the qualities of a devil; devilish; fiendish; outrageously wicked.

    a diabolical plot.

  2. pertaining to or actuated by a devil.


diabolical British  
/ ˌdaɪəˈbɒlɪkəl /

adjective

  1. excruciatingly bad; outrageous

  2. (intensifier)

    a diabolical liberty

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Other Word Forms

  • diabolically adverb
  • diabolicalness noun
  • hyperdiabolical adjective
  • hyperdiabolically adverb
  • hyperdiabolicalness noun
  • nondiabolical adjective
  • nondiabolically adverb
  • nondiabolicalness noun
  • superdiabolical adjective
  • superdiabolically adverb
  • superdiabolicalness noun

Etymology

Origin of diabolical

First recorded in 1500–10; from Late Latin diabolicus ( diabolic ( def. ) ) + -al 1 ( def. )

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

"It's a diabolical situation that consumers find themselves in and especially at a really important time of year for families and for businesses," Mr Walker said.

From BBC

The diabolical move from Riley would pay off.

From Los Angeles Times

The promise remains dazzling and deliciously diabolical enough for adherents to forget that deals with the devil always come with a hidden, inescapable price tag.

From Salon

But the sinister thing about Obamacare is, and the way the architects did this, it was diabolical.

From The Wall Street Journal

After that fall, each bout of sickness or medical procedure causes a cruel chain reaction, like a diabolical Rube Goldberg machine.

From The Wall Street Journal