underwater

(noun, adjective, verb, adverb)

adjective

1. beneath the surface of the water

Similar word(s): subsurface, submerged, submersed

2. growing or remaining under water

Similar word(s): aquatic, subaquatic, subaqueous, submerged, submersed

Sentences with underwater as an adjective:

- We've been underwater on our mortgage ever since the housing crash.

adverb

1. going beneath the surface of the water

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.

verb

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