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diabolical

adjectiveattested in dialogue

  • United Kingdom/[ˌdaɪəˈbɒlɪkəɫ]/
  • United States/[ˌdaɪəˈbɑlɪkəɫ]/

Of or concerning the devil: devilish, satanic.

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

    slang(Devilishly) cunning or devious.

  4. 4

    slangCrazy, wild (sometimes especially due to being unexpected or surprising).

Etymology

From diabolic + -al.

Forms

comparative
more diabolical
superlative
most diabolical
The neighbouring pagesAlphabetical order follows the rules of the language, not byte values: an accent decides only between two otherwise identical words, and Spanish files Ñ as a letter of its own.

Lexical content from Wiktionary, under CC BY-SA 4.0 · Source entry · Data version 2026-08-23

Rank among the words of the OpenSubtitles 2018 corpus — film and television subtitles, so spoken rather than written usage (CC BY-SA 3.0).