amenazante

adj. threatening, forbidding

= threatening, forbidding, menacing.
Ex: It is easy to become carried away by the sheer size of the so-called 'information explosion' and to regard the growth of literature as a phenomenon as threatening to civilization as a virulent epidemic or the 'population explosion' in the third world.
Ex: All those shelves full of books are forbidding, daunting.
Ex: This is a collection of articles on the theme: Books for children with murderous, shocking, menacing endings.