Lewis Short
(verb) : in-servĭo, īvi or ĭi, ītum, 4 (archaic forms, inservibas, Plaut. Most. 1, 3, 59:
* Inservibat,Sil. 7, 341), and (rarely) a., to be serviceable, to be devoted or attached to, to be submissive to, to serve (syn.: deservio, ministro); with dat., rarely with acc. (class.).
* With dat.: filium meum amico suo video inservire,Ter. Heaut. 3, 1, 9: a quo plurimum sperant, ei potissimum inserviunt,Cic. Off. 1, 15, 49: plebi, cui ad eam diem summa ope inservitum erat,who had been treated with the utmost deference,Liv. 2, 21, 6: legibus definitionis,Gell. 1, 25, 10.—Of inanim. and abstr. things, to be devoted to, to attend to, take care of: suis commodis,Cic. Fin. 2, 35, 117: temporibus,Nep. Alcib. 1: honoribus,Cic. Off. 2, 1, 4: artibus,id. de Or. 1, 4, 13: vocibus,id. Or. 20, 68: famae,Tac. A. 13, 8.
* With acc.: si illum inservibis solum,Plaut. Most. 1, 3, 59; id. Poen. 4, 2, 105; cf.: nihil est a me inservitum temporis causa,Cic. Fam. 6, 12, 2.
* Absol.: inservientium regum ditissimus,vassal,Tac. H. 2, 81.
Charlton T. Lewis, Charles Short, A Latin Dictionary