driest
adj. B1 Intermediate US //ˈdɹaɪəst// UK //dɹˈaɪəst// dri·est
adj. having the least amount of water or moisture. You use this to describe the most dry thing in a group.
adj. the superlative form of 'dry', indicating the highest degree of lack of moisture or liquid.
This is the driest place I have ever visited.
The desert is the driest region on the planet, receiving almost no rainfall throughout the year.
While the coastal areas remain humid, the interior valleys are the driest parts of the country, requiring specialized irrigation to support any form of agriculture.