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Synonyms for Arid (same or very similar meaning)

WordNet sense 1 (lacking sufficient water or rainfall):

WordNet sense 2 (free from liquid or moisture; lacking natural or normal moisture or depleted of water; or no longer wet):

WordNet sense 3 (lacking vitality or spirit; lifeless):
desiccate, desiccated, desiccate

WordNet sense 4 (lacking in liveliness or animation):

From the ODE community, based on WordNetadd/edit