Answer:

driest

Answer	Crossword Clue
DRIEST	Most dehydrated
DRIEST	Most arid
DRIEST	Least interesting

DRIEST	Having the least rainfall
DRIEST	Least sweet
DRIEST	Most like the Mojave
DRIEST	Most similar to the Sahara
DRIEST	Most in need of watering
DRIEST	Least moist
DRIEST	Most uninteresting
DRIEST	Most matter-of-fact

DRIEST	Most parched
DRIEST	Arid to the max
DRIEST	Least waterlogged
DRIEST	Most thirsty
DRIEST	Least engaging
DRIEST	Having the least rain
DRIEST	Most parched.
DRIEST	Most vapid.

DRIEST	Most thirsty.
DRIEST	Most uninteresting.
DRIEST	Least sweet.
DRIEST	Least moist.
DRIEST	Least interesting.
DRIEST	Most boring
DRIEST	Least rainy
DRIEST	Most exsuccous

DRIEST	Most desiccated
DRIEST	Thirstiest
DRIEST	Oenophile's superlative
DRIEST	Least laugh-out-loud, as humor
DRIEST	Most like a bone
DRIEST	Having the least vermouth
DRIEST	Least sweet, as wine
DRIEST	Least wet

DRIEST	Most Saharan
DRIEST	Like the Atacama Desert
DRIEST	Most in need of irrigation
DRIEST	Like Nevada among all U.S. states
DRIEST	Like the Atacama Desert among all places on earth