thirst·y / ˈ[unvoicedth]ərstē/ • adj. (thirst·i·er, thirst·i·est) feeling a need to drink something: the hikers were hot and thirsty. ∎ (of land, plants, or skin) in need of water: dry or parched. ∎ (of an engine, plant, or crop) consuming a lot of fuel or water. ∎ having or showing a strong desire for something: Jake was as thirsty for scandal as anyone else. ∎ inf. (of activity, weather, or a time) causing the feeling of a need to drink something: modeling is thirsty work.DERIVATIVES: thirst·i·ly / -stəlē/ adv.thirst·i·ness n.