Definition of underway
- underway replenishment of fuel
The train has had to stop briefly, but it should be under way again soon.
Preparations for their arrival are already under way.
First Known Use: 1720See Words from the same year
: in or into motion
: happening now
What made you want to look up underway? Please tell us where you read or heard it (including the quote, if possible).
Merriam-Webster's New Words Quiz—Fall 2017 Edition!
Test your vocabulary with our 10-question quiz!TAKE THE QUIZ
Test Your Knowledge - and learn some interesting things along the way.TAKE THE QUIZ