Here's a breakdown:
* Menace: A threat of harm or danger; something that causes fear or worry.
* Menacingly: An adverb that modifies a verb or adjective, indicating that something is done or perceived in a way that suggests a threat.
Examples:
* "The dark figure stood menacingly in the doorway." (The figure's presence is threatening.)
* "The storm clouds gathered menacingly over the city." (The storm clouds suggest an impending threat.)
* "He glared at me menacingly." (His glare was intimidating and suggested potential harm.)
Synonyms:
* Threateningly
* Intimidatingly
* Sinisterly
* Ominously
* Hostilely