In English, "diabolical" has many nuances of meaning. It can describe the devil himself (as in "my diabolical visitor") or anything related to or characteristic of him in appearance, behavior, or thought; …

DIABOLICAL definition: having the qualities of a devil; devilish; fiendish; outrageously wicked. See examples of diabolical used in a sentence.

Morally wrong and evil (Definition of diabolical from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)

Define diabolical. diabolical synonyms, diabolical pronunciation, diabolical translation, English dictionary definition of diabolical. also di·a·bol·ic adj. 1. Of, concerning, or characteristic of the devil; satanic. 2. …

If you describe something as diabolical, you are emphasizing that it is very bad, extreme, or unpleasant.

Definition of diabolical adjective in Oxford Advanced Learner's Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more.

Factsheet What does the word diabolical mean? There are six meanings listed in OED's entry for the word diabolical. See ‘Meaning & use’ for definitions, usage, and quotation evidence.

Diabolical may refer to: Evil, the profound immorality, especially when regarded as a supernatural force, for example in religious belief The Devil, believed in many religions, myths and cultures to be a …

Jul 22, 2025 · (slang) Crazy, wild (sometimes especially due to being unexpected or surprising).

The term has been used to describe evil or wicked actions or intentions, often associated with the devil or supernatural forces. Over time, 'diabolical' has become a common adjective to convey extreme …