Definition of diabolical in English:

diabolical

Pronunciation /ˌdīəˈbälək(ə)l/ /ˌdaɪəˈbɑlək(ə)l/

Translate diabolical into Spanish

adjective

  • 1

    (also diabolic)
    Characteristic of the Devil, or so evil as to be suggestive of the Devil.

    • ‘his diabolical cunning’
    devilish, diabolic, fiendish, satanic, Mephistophelian, demonic, demoniacal, hellish, infernal, evil, wicked, ungodly, unholy
    devilish, diabolical, fiendish, satanic, Mephistophelian, demonic, demoniacal, hellish, infernal, evil, wicked, ungodly, unholy
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  • 2British informal Disgracefully bad or unpleasant.

    • ‘a singer with an absolutely diabolical voice’
    very bad, poor, dreadful, awful, terrible, frightful, disgraceful, shameful, lamentable, deplorable, appalling, atrocious
    very great, extreme, excessive, undue, inordinate, immoderate, unconscionable, outrageous
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Origin

Late Middle English (as diabolic): from Old French diabolique or ecclesiastical Latin diabolicus, from diabolus ‘devil’; the form diabolical dates from the early 16th century.