The renovation project is finally underway.With the meeting underway, decisions were being made.The research expedition got underway at dawn.
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Antonyms:
Under way
/ˌʌndər ˈweɪ/
In progress; having started and currently happening
Examples:
The project is finally under way after many delays.The ship set sail and was under way by dawn.With the renovations under way, the museum will reopen soon.
Synonyms:
Antonyms:
Ways to tell them apart:
Under way is a two-word expression that usually works as either an adverb or an adjective and tends to refer to something in motion.
Underway is one word and is often used as an adjective, synonymous with in progress.
Remember that if you can replace the term with in progress and the sentence still makes sense, underway is the better choice.
In nautical contexts or when referring to actual movement, under way might be the preferred choice to describe a vessel that is not anchored or moored.
The one-word version underway is becoming more common when referring to activities or actions that have started.