Malevolent Sinister (Adj.) means: Harmful, menacing, or vindictive. Anything that make us feel that something bad or evil might happen is called sinister.
Synonyms
Synonyms of ‘Sinister’ are:
Evil, threatening, menacing, forbidding, dire, ominous, malignant, malevolent, baleful, injurious, bode-full, vindictive, dangerous, deadly, intimidating, harmful, pernicious, noxious, venomous, ruinous, minatory, maleficent, minacious, vicious, hostile, spiteful, rancorous, evil-minded, etc.
Antonyms
Antonyms of ‘Sinister’ are:
Good, encouraging, reassuring, calming, benign, heartening, benevolent, auspicious, propitious, etc.
Word in a sentence
There is a sinister feeling about that old abandoned house.
The ruined building had a sinister appearance.
Marry has dark, sinister eyes, which make people nervous when she looks at them.

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