Aquatic
Part of speech: adjective
Definition: Relating to water; living in or near water, taking place in water.
Underwater
Part of speech: adjective
Definition: beneath the surface of the water, or of or pertaining to the region beneath the water surfacebeneath the water line of a vesselhaving negative equity; owing more on an asset than its market value
Part of speech: noun
Definition: underlying water or body of water, for example in an aquifer or the deep oceanA type of lure which lies beneath the water surface.
Part of speech: verb
Definition: to water or irrigate insufficiently
Example sentence: It was great. I mean, it's a blast directing underwater stuff.