Lewis & Short

ădūlo, āvi, ātum, 1, v. a. (a rare form for adulor; hence Prisc. 791 P. ranks this form, as an exception, among the other active forms of the deponents, adipiscor, admiror, auxilior, etc.; cf. Don. p. 1756 P. and Ars Consent. p. 2054 P.), to fawn like a dog: (canes) gannitu vocis adulant, Luor. 5, 1070: caudā nostrum adulat sanguinem (the eagle), strokes, i. e. wipes off our blood, Cic. poët. ap. Tusc. 2, 10, 24, as trans. of Aeschyl. Prometh. Solut.: Dionysium, Val. Max. 4, 3, ext. 4.
Pass., to be flattered nec adulari nos sinamus, Cic. Off. 1, 26, 91: tribunus militum adulandus erat, Val. M. 2, 7, 15: adulati erant ab amicis, Cass. ap. Prisc. p. 791 P.