Thesaurus
To save this word, you'll need to log in.
Synonyms of underwater
living, lying, or occurring below the surface of the water
- underwater plants don't require as much light to grow as surface plants
- a vessel designed for underwater exploration
Synonyms for underwater
Words Related to underwater
Keep scrolling for more
Learn More about underwater
From the Editors at Merriam-Webster
The Over and Under of It
The Over and Under of It
9 phrases from above and below
Thesaurus Entries near underwater
See More Nearby EntriesCite this Entry
“Underwater.” The Merriam-Webster.com Thesaurus, Merriam-Webster Inc., https://www.merriam-webster.com/thesaurus/underwater. Accessed 15 December 2019.
Keep scrolling for more
Comments on underwater
What made you want to look up underwater? Please tell us where you read or heard it (including the quote, if possible).
Test Your Vocabulary
Great Scrabble Words—A Quiz
- Which of the following Q-without-U words means the number five in cards or dice?
Can you spell these 10 commonly misspelled words?
TAKE THE QUIZ
Test Your Knowledge - and learn some interesting things along the way.
TAKE THE QUIZLove words? Need even more definitions?
Merriam-Webster unabridgedWords at Play
Ask the Editors
Word Games
Share underwater
Time Traveler for underwater
The first known use of underwater was in 1627
See more words from the same year