"aridest" in the adjective sense
1. arid, waterless
lacking sufficient water or rainfall
"an arid climate"
"a waterless well"
"miles of waterless country to cross"
2. arid, desiccate, desiccated
lacking vitality or spirit lifeless
"a technically perfect but arid performance of the sonata"
"a desiccate romance"
"a prissy and emotionless creature...settles into a mold of desiccated snobbery"-C.J.Rolo
Source: WordNet® (An amazing lexical database of English)
Princeton University "About WordNet®."
WordNet®. Princeton University. 2010.
View WordNet® License