Aridity is a term used to describe a lack of moisture or water in an environment. The crossword solutions for this term include DRYNESS (7 letters), DROUGHT (7 letters), ISOLATION (9 letters), SOLITUDE (8 letters), DESERT (6 letters), LONELINESS (10 letters), DESOLATION (10 letters), BLEAKNESS (9 letters), WASTE (5 letters), AUSTERITY (9 letters), BARENESS (8 letters), and DESOLATENESS (12 letters). These words all describe a lack of life, water, or resources in an area, which is the definition of aridity.