Underwater

How to spell underwater

10 letters · 4 syllables

How to pronounce underwater

Say the part in capitals loudest.

What does underwater mean?

1. adjectiveSituated, happening, or used beneath the surface of water.
2. adjectiveOwing more on a loan or asset than the asset is currently worth.

Underwater in a sentence

• The divers explored an underwater cave near the reef.

• When house prices fell, many owners found their mortgages were underwater.

• She bought a waterproof case so her phone could take underwater photographs.

• The dealership warned that trading in early could leave the buyer underwater on the car loan.

Where does underwater come from?

Language of origin: Germanic

This is a transparent native English compound, joining the Old English preposition 'under', meaning 'beneath' or 'lower than', with 'water', from Old English 'wæter', the everyday word for the clear liquid. Both halves are deeply Germanic and have close cousins across the family: 'under' relates to German 'unter' and Dutch 'onder', while 'water' matches German 'Wasser' and Dutch 'water'. The combined form, describing something below the surface of a body of water, became common only from around the seventeenth century onward, as diving, salvage, and later submarine technology gave people reason to talk about life beneath the waves. In modern usage it stretched figuratively into finance, where a mortgage or asset is said to be 'underwater' when it is worth less than the debt owed against it. Because each part is a familiar word, the spelling holds no real trap beyond remembering it is written as one solid word, not two.

How the word is built

• under- (beneath)
• water (the liquid); compound adjective/adverb