threatening or suggesting evil or harmThere was something sinister about him that she found disturbing.
a threatening atmosphere of rising tension and stress
His bushy eyebrows gave his face a menacing look.
There was something severe and forbidding about her face.
There was an ominous silence at the other end of the phone.
the malign influence jealousy had on their lives
a malignant minority indulging in crime and violence
Her stare was malevolent, her mouth a thin line.
He had a baleful look.
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in the sense of baleful
harmful, menacing, or vindictiveHe had a baleful look.
in the sense of forbidding
severe and threatening in appearance or mannerThere was something severe and forbidding about her face.
Video: pronunciation of 'sinister'
sinister 的词库—— 柯林斯 英语词库
Life on the edge
The desire to push the boundaries has been a motivator in many a daring expedition, testing the human spirit and physical abilities to the utmost. Indulge your adventurous spirit by exploring some associated ‘extreme’ vocabulary. Will you have the survival skills to master our quiz?