Synonyms of diabolical
119 similar words · 9 opposite words
Another word for diabolical is fell. Other synonyms of diabolical are abandoned, demonic, brutal, wicked and black-hearted. The opposite of diabolical is undiabolical.
Synonyms and similar words for diabolical
adjectiveOf or concerning the devil: devilish, satanic.
- daemonicalOf or relating to daemons; diabolical.
- demonicPertaining to demons or evil spirits; demoniac.
- diabolicOf, being, or pertaining to a devil or the Devil.
adjectiveExtremely wicked or cruel.
- baneful
- malevolentHaving or displaying ill will; wishing harm on others.
- maliciousIntending to do harm; characterized by spite and malice.
- barbarousMercilessly or impudently violent or cruel, savage.
- brutalSavagely violent, vicious, ruthless, or cruel, often in an unintelligent manner.
- compassionlessWithout compassion; hardhearted.
- cruel
- flagitious formal
- fellOf a strong and cruel nature; eager and unsparing; grim; fierce; ruthless; savage.
- incessiveFierce; cruel and aggressive.
- inhumanOf or pertaining to inhumanity and the indifferently cruel, sadistic or barbaric behavior it brings.
- inhumane
- mercilessShowing no mercy; cruel and pitiless.
- nastySpiteful, unkind.
- nonhumaneNot humane, inhumane.
- pitilessHaving, or showing, no pity; merciless, ruthless.
- remorselessWithout remorse, mercy or pity.
- rottenCruel, mean or immoral.
- ruthlessWithout pity or compassion; cruel, pitiless.
- sadisticDelighting in or feeling pleasure from the pain or humiliation of others.
- savageBrutal, vicious, or merciless.
- spitefulFilled with, or showing, spite; having a desire to annoy or harm.
- truculentCruel or savage.
- unbenevolentNot benevolent.
- unbenignNot benign; malevolent.
- unkind
- unmercifulNot showing mercy.
- unpityingNot feeling or showing pity.
- abandonedHaving given oneself up to vice; immoral; extremely wicked, or sinning without restraint; irreclaimably wicked.
- badEvil; wicked.
- bad appleA person who is not wholesome, honest, or trustworthy, especially one who has an adverse influence on others.
- bad seed
- baleful
- scurrilous
- baseMorally reprehensible, immoral; cowardly.
- black-heartedHaving a wicked, malignant disposition; morally bad.
- darkWithout moral or spiritual light; sinister, malevolent, malign.
- deleterious
- depraved
- despicableFit or deserving to be despised; contemptible; mean.
- detrimentalCausing damage or harm.
- devilishResembling a devil.
- evil
- evil-mindedHaving evil thoughts or intentions.
- harmfulCausing or likely to cause harm or damage; injurious.
- heinous
- ill-intentionedHaving bad intentions; malevolent.
- ill-natured
- immoralBreaching principles of natural law, rectitude, or justice, and so inconsistent with the demands of virtue, purity, or...
- incorrigible
- iniquitousMorally objectionable; sinful, wicked.
- injurious
- knavishHaving the characteristics of a knave; mischievous, roguish, waggish, rascally or impertinent.
- maleficHaving an evil or harmful influence; baleful.
- maleficentHarmful or evil in intent or effect.
- malign
- malignant
- nefariousSinful, villainous, criminal, or wicked, especially when noteworthy or notorious for such characteristics.
- no-goodHaving no value, use or merit.
- peccaminousSinful.
- pernicious
- reprehensible
- reprobate
- satanicEvil, fiendish, devilish or diabolical.
- scathful
- sinfulConstituting a sin; morally or religiously wrong; wicked; evil.
- sinisterEvil or seemingly evil; indicating lurking danger or harm.
- sordid
- ungodlyImmoral, sinful, or wicked.
- unholy
- vicious
- vile
- villainous
- wickedEvil or mischievous by nature; morally reprehensible.
- wrong
- bowelless obsoleteWithout pity.
- despiteful archaicFull of despite; expressing malice or contemptuous hate.
- inclement obsoleteMerciless, unrelenting.
- unpitiful archaicWithout pity; pitiless.
- arrant datedVery bad; despicable.
- facinorous archaicExtremely wicked.
- iniquous obsoleteSynonym of iniquitous.
- naughty archaic, rareEvil, wicked, morally reprehensible.
- niddering archaicSynonym of nithing (“cowardly, dastardly; notoriously evil or wicked; infamous”).
- nidering archaic
- niding archaic
- nithing archaicNotoriously evil or wicked; infamous.
- sullen obsoleteMischievous; malignant; unpropitious.
adjective(Devilishly) cunning or devious.
- crafty
- sly
- tricksyInclined to trickery; sneaky, devious.
- astute
- artfulSkilful at using dishonest or unfair means to achieve a purpose; crafty, cunning.
- cunningSly; crafty; clever in surreptitious behaviour.
- devious
- foxlikeResembling or characteristic of a fox.
- foxy
- frood ScotlandShrewd; sagacious; wary; cautious.
- guilefulFull of guile; treacherously deceptive.
- shrewd
- slimSly, crafty.
- tricky
- vulpine
- wilySly, cunning, full of tricks.
- cautelous obsolete
- subtle archaicOf a person or animal, or of an action or words: clever or skilful in a crafty or devious way; cunning, sly, wily.
adjectiveMore synonyms
- cacodaemoniacalDemonic; evil.
- demoniacOf or pertaining to demons; demonic.
- demoniacalPertaining to, characteristic of, or produced by a demon or evil spirit; devilish, demonic, fiendish.
- demonical
- demonishLike or characteristic of a demon; demonic.
- demonlikeResembling a demon in form or action.
- demonlyOf, relating to, or like a demon; demonic.
- fallen angelicOf or pertaining to a fallen angel.
- fiendlikeResembling a fiend.
- satanicalSatanic.
Opposite of diabolical
adjectiveMore antonyms
- angelic
- divine
- undemonicNot demonic.
- undevilishNot devilish.
- undiabolicalNot diabolical.
- unsatanicNot satanic.
- nondemonicNot demonic.
- nondiabolicNot diabolic.
- nonsatanicNot satanic.
Meaning of diabolical
- adjective Of or concerning the devil: devilish, satanic.
- adjective Extremely wicked or cruel.
- adjective (Devilishly) cunning or devious.
diabolical in other languages
Questions about synonyms of diabolical
- What is another word for diabolical?
- Diabolical has 119 synonyms on Word.ws, such as fell, abandoned, demonic, brutal, wicked, black-hearted, malicious and ruthless.
- What is the opposite of diabolical?
- The opposite of diabolical is undiabolical.
- What does diabolical mean?
- Diabolical means of or concerning the devil: devilish, satanic.
Source and license
Adapted from Wiktionary: diabolical (page history and authors) and the entries of the words listed. Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws grouped the synonyms and antonyms by meaning and added links. Wiktionary data of 2026-09-02.
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Cite this page: “Synonyms of diabolical.” Word.ws, https://word.ws/synonyms/diabolical. Based on Wiktionary, CC BY-SA 4.0.