F0244000 (fər-bĭd′ĭng, fôr-)adj.1. Tending or threatening to impede progress: forbidding rapids.2. Unpleasant; disagreeable: a forbidding scowl.3. Having a menacing aspect: forbidding thunderclouds.for·bid′ding·ly adv.Thesaurus
Adv.
1.
forbiddingly - in an unpleasant or menacing manner; "it was forbiddingly dark in the corridor"