General Usage:
* The dark clouds gathering on the horizon looked threatening.
* The bully's threatening words made the smaller children cower.
* The company's financial situation was becoming increasingly threatening.
* He gave her a threatening look.
Specific Examples:
* The threatening letter warned her to leave town or face consequences.
* The judge issued a threatening injunction against the protestors.
* The news report depicted the political situation as threatening to national security.
* The doctor warned of the threatening complications from the untreated infection.
Figurative Usage:
* The silence after his speech was threatening in its intensity.
* Her beauty was threatening to the other women in the room.
Remember that the meaning of "threatening" can vary depending on the context.