diabolic
[adjective]
Synonyms: satanic, devilish, Mephistophelian, fiendish, demoniac, demonian, demonic, diabolonian, serpentine, unhallowed

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Antonyms: angelic
Related Words: evil, ill, wicked

[TahlilGaran] English Synonym Dictionary ▲

diabolic adjective & noun. [dʌɪǝ'bɒlɪk] LME.
[(Old & mod. French diabolique from) ecclesiastical Latin diabolicus, from diabolus DEVIL noun: see -IC.]
A. adjective.
1. Of, pertaining to, or deriving from the Devil or devils; of or pertaining to witchcraft. LME.

2. Having the qualities of the Devil or a devil; inhumanly cruel or wicked, fiendish. L15.

3. Resembling a devil in appearance. M19.
B. noun. An agent or follower of the Devil. E16-M17.

[TahlilGaran] English Dictionary ▲