forbiddingly
- r in an unpleasant or menacing manner
it was forbiddingly dark in the corridor
- Suddenly, Gullfoss the Golden Falls lies before us, forbiddingly beautiful.
- Even its author calls it "forbiddingly technical, a practitioner's manual.
- Nature's plumbing is so delicate and complex that the surgical feat of putting a transplanted kidney into its normal place in the human body would have been forbiddingly difficult.