Lewis & Short

rēsponsĭto, āvi, 1, v. freq. a. [respondeo, II. A. 2. a.]; of lawyers, to give an answer, opinion, advice, Cic. Rep. 5, 3, 5; id. Leg. 1, 4, 14 Mos. N. cr.; Gell. 13, 10, 1; Dig. 3, 1, 1.