Lewis & Short

ex-āresco, rŭi, 3, v. inch. n., to dry up, become completely dry (rare, but class.).

  1. I. Lit.: vestimenta uvida, Plaut. Rud. 2, 7, 20: frumentum, Varr. R. R. 1, 32: silva omnis radicitus, Suet. Galb. 1: amnes, Cic. Pis. 33, 82; id. Div. 1, 19 fin.; cf. fontes, * Caes. B. C. 3, 49, 5: lacus et stagna, Dig. 41, 1, 12: lacrimae, to dry up, Cic. Att. 10, 14.
  2. II. Trop.: neque dum exarui ex amoenis rebus et voluptariis, Plaut. Mil. 3, 1, 46: sic omnis fetus repressus, exustusque flos siti veteris ubertatis exaruit, Cic. Brut. 4, 16: cum vetustate exaruit opinio, dried up, extinguished, id. Tusc. 3, 31, 75; cf.: vetus urbanitas, id. Fam. 7, 31: facultas orationis, id. ib. 9, 18, 3.