Underwater

Origin

under + water

Adjective

1. (not comparable) beneath the surface of the water, or of or pertaining to the region beneath the water surface
2. (nautical) beneath the water line of a vessel
3. (figuratively) Under water.
4. (finance) having negative equity; owing more on an asset than its market valueWe've been underwater on our mortgage ever since the housing crash.

Synonyms

• (beneath the water surface): subaqueous, subaquatic, submarine
• (having negative equity): upside down

Related terms

• underground
• underseas

Full definition of underwater

Noun

1. underlying water or body of water, for example in an aquifer or the deep ocean
2. (fishing) A type of lure which lies beneath the water surface.
• Practically all wobbling underwaters will take fish aplenty in the hands of a man who really knows how to put them through their stints.

Verb

1. (agriculture, horticulture) to water or irrigate insufficiently

Antonyms

• afloat