Gerund-derived noun, chiefly uncountable, denoting the act or instance of looming.
Definitions
The act or instance of appearing as a large, indistinct, and often threatening shape. The looming of the cliffs in the mist made the sailors uneasy.
loomgerund / present participle Used attributively to describe something imminent or threatening
Definitions
Imminent and potentially menacing; about to happen soon. They discussed the looming economic crisis.