The police should have charged them with threatening behaviour.
a threatening atmosphere of rising tension and stress
There was an ominous silence at the other end of the phone.
There was something sinister about him that she found disturbing.
There was something severe and forbidding about her face.
They painted a grim picture of growing crime.
He had a baleful look.
The meeting got off to an inauspicious start.
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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 'threatening'
threatening 的词库—— 柯林斯 英语词库
Life on the edge