Synonyms of the word

underwater

• adj. (not comparable) beneath the surface of the water, or of or pertaining to the region beneath the water…
• adj. (nautical) beneath the water line of a vessel.
• adj. (figuratively) Under water.
• adj. (finance) having negative equity; owing more on an asset than its market value.
• adv. going beneath the surface of the water.
• n. underlying water or body of water, for example in an aquifer or the deep ocean.
• n. (fishing) A type of lure which lies beneath the water surface.
• v. (agriculture, horticulture) to water or irrigate insufficiently.

aquatic

• adj. Relating to water; living in or near water, taking place in water.

subaquatic

• adj. Located or living under water; submarine.

subaqueous

• adj. Existing below the water surface.
• adj. Designed for underwater use.
• adj. Weak and filtered.

submerged

• v. simple past tense and past participle of submerge.
• adj. underwater.
• adj. below the surface of a liquid.
• adj. hidden.
• adj. poor, impoverished.

submersed

• v. simple past tense and past participle of submerse.

subsurface

• n. Something that is below the layer that is on the surface.
• n. (countable, mathematics) A surface which is a submanifold of another surface.
• adj. below the surface.