Threatening
Part of speech: verb
Definition: To make a threat against someone; to use threats.
Part of speech: adjective
Definition: Presenting a threat; menacing; frightening.
Example sentence: Though beauty gives you a weird sense of entitlement, it's rather frightening and threatening to have others ascribe such importance to something you know you're just renting for a while.
Minacious
Part of speech: adjective
Definition: Of a threatening or menacing character.