Définitions
1.AdjectiveBeneath 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.AdjectiveBeneath the water line of a vessel."When the ship was brought into dry dock, it was found that she had underwater damage."
3.AdjectiveIn difficulty, especially financially.
4.AdjectiveHaving negative equity; owing more on an asset than its market value."We've been underwater on our mortgage ever since the housing crash."
5.AdjectiveOf 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.
6.AdverbSo as to go beneath the surface of the water."Can you swim underwater?"
7.NounUnderlying water or body of water, for example in an aquifer or the deep ocean.
8.NounA type of lure which lies beneath the water surface.
9.VerbTo water or irrigate insufficiently."Care must be taken not to underwater houseplants in the summer."