adj.

1. Of, concerning, or characteristic of the devil; satanic.
2. Appropriate to a devil, especially in degree of wickedness or cruelty.

[From Middle English deabolik, from Old French diabolique, from Late Latin diabolicus, from Latin diabolus, devil. See devil.]

diabolically di'a·bol'i·cal·ly adv.
diabolicalness di'a·bol'i·cal·ness n.

adjective

Perversely bad, cruel, or wicked: devilish, diabolic, fiendish, ghoulish, hellish, infernal, ogreish, satanic, satanical. See kind/cruel.

IN BRIEF: Having characteristics like the devil.

The wind seemed diabolical as it blew the trees close to the electric lines.

Note: click on a word meaning below to see its connections and related words.

The adjective has 2 meanings:

Meaning #1: showing the cunning or ingenuity or wickedness typical of a devil
  Synonyms: devilish, diabolic, mephistophelian, mephistophelean

Meaning #2: extremely evil or cruel; expressive of cruelty or befitting hell
  Synonyms: demonic, diabolic, fiendish, hellish, infernal, satanic, unholy

---

Dansk (Danish)
adj. - djævelsk, diabolsk, djævleblændt

Nederlands (Dutch)
verschrikkelijk, schandalig slecht, duivels, uitgekookt, irritant

Français (French)
adj. - diabolique, infernal, satanique, atroce, épouvantable

Deutsch (German)
adj. - teuflisch, diabolisch

Ελληνική (Greek)
adj. - διαβολικός, σατανικός
int. - διαβολικό, σατανικό

Italiano (Italian)
diabolico

Português (Portuguese)
adj., -
int. - diabólico

Русский (Russian)
дьявольский

Español (Spanish)
adj. - diabólico

Svenska (Swedish)
adj. - förfärlig, avskyvärd
int. - jäkla

中文（简体） (Chinese (Simplified))
恶魔的

中文（繁體） (Chinese (Traditional))
adj. - 惡魔的

한국어 (Korean)
adj. - 마귀의, 잔인 무도한, 악마 같은

日本語 (Japanese)
adj. - 悪魔の, 悪魔的な

العربيه (Arabic)
‏(صفه) شيطاني, شرير جدا (نداء) رهيب‏

עברית (Hebrew)
adj. - ‮שטני, מחפיר, גרוע‬

If you are unable to view some languages clearly, click here.

To select your translation preferences click here.