Synonyms for Thirsty (same or very similar meaning)
WordNet sense 1 (free from liquid or moisture; lacking natural or normal moisture or depleted of water; or no longer wet):
dryWordNet sense 2 ((usually followed by `for') extremely desirous):
athirst, hungryWordNet sense 3 (having or expressing desire for something):
wishfulWordNet sense 4 (having power or capacity or tendency to absorb or soak up something (liquids or energy etc.)):
absorptiveFrom the ODE community, based on WordNetadd/edit