to increase or enlarge much (perh. only in the foll. exs.): res rationesque vostrorum omnium Bono atque amplo auctare lucro, Plaut.Am. prol. 6: Unde omnis natura creet res auctet alatque, Lucr. 1, 56: Salve, teque bonā Juppiter auctet ope, Cat. 67, 2.