Needing water is a term that describes the state of something that requires hydration. The crossword solutions for this term are THIRSTY (7 letters), DRY (3 letters), and ARID (4 letters). THIRSTY is an adjective used to describe a person or thing that is in need of a drink, while DRY is an adjective used to describe something that has no moisture or liquid. Lastly, ARID is an adjective used to describe a place or region that is extremely DRY due to lack of rainfall.