underwater

Fetched 2026-11-03 (live).

Synonyms: under water, undertaker, underrate, underrated, underager, underwriter, underlayer, undermaster, undercarter, undersaver, underrates

Antonyms: under water, undertaker, underrate, underrated, underager, underwriter, underlayer, undermaster, undercarter, undersaver, underrates

Related words from Datamuse; suggestions, not definitions.

Adjective

1. Beneath the surface of the water; of or pertaining to the region beneath the water surface.
   • Watch out for underwater obstacles.
   • He was a pioneer in underwater exploration.
2. Beneath the water line of a vessel.
   • When the ship was brought into dry dock, it was found that she had underwater damage.
3. In difficulty, especially financially.
4. Having negative equity; owing more on an asset than its market value.
   • We've been underwater on our mortgage ever since the housing crash.
5. Of an option, having a strike price higher (call options) or lower (put options) than the current market price of the underlying asset or financial product; for example, an option to buy shares at $20 when the current market price is $15.

Adverb

1. So as to go beneath the surface of the water.
   • Can you swim underwater?

Noun

1. Underlying water or body of water, for example in an aquifer or the deep ocean.
2. A type of lure which lies beneath the water surface.

Verb

1. To water or irrigate insufficiently.
   • Care must be taken not to underwater houseplants in the summer.

Source: Wiktionary · CC BY-SA 3.0 (Wiktionary) · cached copy, not a rewrite.