Synonyms of fiendish

fiendish 1 of 2

adjective

1

as in demonic

of, relating to, or worthy of an evil spirit

a fiendish delight in playing cruel tricks

Synonyms & Similar Words

• demonic
• sinister
• demonical
• diabolic
• diabolical
• demoniacal
• satanic
• devilish
• malicious
• demoniac
• infernal
• vicious
• ferocious
• wicked
• Luciferian
• cruel
• hellish
• savage
• malignant
• demonian
• malevolent
• evil
• cacodemonic
• heinous
• villainous
• monstrous
• nefarious
• vile
• baleful
• iniquitous
• barbarous
• immoral
• inhuman

Antonyms & Near Antonyms

• angelic
• celestial
• heavenly
• benevolent
• benign
• beneficent
• angelical
• holy
• moral
• saintly
• godly
• good
• virtuous
• ethical
• righteous
• benignant
• sainted

2

as in brutal

having or showing the desire to inflict severe pain and suffering on others

shook with fiendish laughter as he watched his victims writhe in agony

Synonyms & Similar Words

• brutal
• cruel
• vicious
• savage
• ruthless
• murderous
• sadistic
• merciless
• ferocious
• barbarous
• inhuman
• barbaric
• brute
• truculent
• heartless
• atrocious
• inhumane
• oppressive
• malicious
• hateful
• harsh
• wanton
• pitiless
• butcherly
• bloodthirsty
• grim
• malevolent
• red in tooth and claw
• malignant
• sanguinary
• malign
• fell
• unfeeling
• spiteful
• vindictive
• cutthroat
• sanguine
• draconian
• hard-hearted
• nasty
• despiteful
• ironhearted
• draconic
• stonyhearted
• mean
• catty
• heavy-handed
• hardhanded

Antonyms & Near Antonyms

• benign
• sympathetic
• kind
• humane
• compassionate
• warm
• charitable
• benignant
• kindhearted
• merciful
• tender
• good-hearted
• lenient
• pitying
• tenderhearted
• peaceable
• peaceful
• warmhearted
• clement
• pacific

fiendishness

2 of 2

noun

as in cruelty

disposition to willfully inflict pain and suffering on others

the unconscionable fiendishness of the acts committed by terrorists

Synonyms & Similar Words

• cruelty
• brutality
• atrocity
• savageness
• savagery
• barbarity
• sadism
• inhumanity
• murderousness
• heartlessness
• viciousness
• cruelness
• barbarousness
• inhumanness
• truculence
• wantonness
• atrociousness
• ruthlessness
• mercilessness
• ferocity
• pitilessness
• ferociousness
• meanness
• fierceness
• oppressiveness
• grimness
• malevolence
• bloodthirstiness
• spitefulness
• malignity
• bloodlust
• maliciousness
• unfeelingness
• hard-heartedness
• hatefulness
• sanguinity
• harshness
• despitefulness
• nastiness
• cattiness
• heavy-handedness
• fellness
• sanguineness
• hardhandedness

Antonyms & Near Antonyms

• humanity
• sympathy
• compassion
• kindness
• benignity
• humaneness
• tenderness
• warmth
• tenderheartedness
• kindheartedness
• warmness
• good-heartedness
• mercy
• pity
• clemency
• leniency
• warmheartedness
• mercifulness
• charitableness