adjective
Etymology: from present part of menace (II)
: presenting, suggesting, or constituting a menace : threatening
unemployment reached menacing proportions — P.E.James
his all-knowing and rather menacing smile — Louis Auchincloss
the prospect of a third world war is so menacing — John Strachey
chamber was somber and almost menacing — Dorothy Sayers
• men·ac·ing·ly adverb