impend
verb (used without object)
to be imminent; be about to happen.
Used to describe an action that began in the past, has continued continuously, and is still in progress.
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
"This battle has been impending for days, and orders were issued to the people to escape to the back districts without delay."
From In the Van; or, The Builders by John Price-Brown