Synonyms of sinister

sinister

adjective

ˈsi-nə-stər 

as in ominous

being or showing a sign of evil or calamity to come

the movie relies too much on sinister background music to create the suspense that the plot sorely lacks

Synonyms & Similar Words

• ominous
• menacing
• threatening
• bleak
• dark
• darkening
• foreboding
• somber
• murky
• portentous
• lonely
• baleful
• minatory
• dire
• black
• unfortunate
• inauspicious
• direful
• desolate
• depressing
• depressive
• ill
• gray
• doomy
• ill-boding
• morbid
• cold
• unfavorable
• dim
• morose
• lugubrious
• gloomy
• saturnine
• sullen
• sepulchral
• lonesome
• cheerless
• elegiac
• funereal
• discouraging
• troubled
• dismal
• evil
• dreary
• disconsolate
• glum
• forlorn
• malignant
• unpropitious
• hopeless
• chill
• cloudy
• drear
• disheartening
• unpromising
• miserable
• malign
• comfortless
• plutonian
• tenebrous
• godforsaken
• wretched
• unlucky
• dreich
• Cimmerian
• sunless
• tenebrific
• ill-fated
• ill-starred
• star-crossed

Antonyms & Near Antonyms

• favorable
• benign
• bright
• promising
• golden
• hopeful
• encouraging
• unthreatening
• prosperous
• auspicious
• propitious
• heartening

Synonym Chooser

How is the word sinister different from other adjectives like it?

The words baleful and malign are common synonyms of sinister. While all three words mean "seriously threatening evil or disaster," sinister suggests a general or vague feeling of fear or apprehension on the part of the observer.

a sinister aura haunts the place

When is it sensible to use baleful instead of sinister?

The synonyms baleful and sinister are sometimes interchangeable, but baleful imputes perniciousness or destructiveness to something whether working openly or covertly.

exerting a corrupt and baleful influence

When would malign be a good substitute for sinister?

The words malign and sinister are synonyms, but do differ in nuance. Specifically, malign applies to what is inherently evil or harmful.

the malign effects of racism

Example Sentences

Recent Examples of sinister

The first episode establishes immediately that something is uniquely off about Widow’s Bay, and not just because Shep, a shipman patrolling the waters at night, goes missing, potentially because he’s been taken by a sinister fog. —Jen Chaney, Vulture, 30 Apr. 2026

Upending age-old narrative traditions, Paul’s heroism takes a sinister turn when Herbert reveals that the Bene Gesserit, an Illuminati-like secretive order of psychic matriarchs, has long been conditioning the Fremen to expect the arrival of a messiah, or mahdi, in their native tongue. —Big Think, 29 Apr. 2026

Lowen and Jeremy begin kissing, but when Lowen pulls back, Jeremy is now Verity, giving her a sinister stare before grabbing her face and forcing another kiss. —Jordana Comiter, PEOPLE, 28 Apr. 2026

As one of music’s biggest stars with an international fanbase, Swift has already contended with more sinister uses of AI. —Cheyenne Roundtree, Rolling Stone, 27 Apr. 2026

Phrases Containing sinister

• bar sinister