For·bid·ding a. Repelling approach; repulsive; raising abhorrence, aversion, or dislike; disagreeable; prohibiting or interdicting; as, a forbidding aspect; a forbidding formality; a forbidding air.
Syn: -- Disagreeable; unpleasant; displeasing; offensive; repulsive; odious; abhorrent.
-- For*bid*ding*ly, adv. -- For*bid*ding*ness, n.
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forbiddingly
adv : in an unpleasant or menacing manner; "it was forbiddingly
dark in the corridor"