Menacing
/mˈɛnəsɪŋ/
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Definition
(adj) Synonym of threatening in its various senses.
Sentence Examples
Thunder rolled with menacing crashes.
The 80m-high cliffs, steep from every angle, appear uninviting, even menacing.
CEFR Practice Quiz
The dark and ____ clouds on the horizon suggested that a severe thunderstorm was rapidly approaching.