aus·ter·i·ty (ô-stĕr′ĭ-tē) n. pl. aus·ter·i·ties 1. The quality of being austere. 2. Severe and rigid economy: wartime austerity. 3. An austere habit or practice. austerity (ɒˈstɛrɪtɪ) n, pl -ties 1. the state or quality of being austere 2. (often plural) an austere habit, practice, or act 3. (Economics) a. reduced availability of …

