Lewis Short
mĕlĭuscŭlus, a, um
* Adj. dim. [melius], somewhat better, rather better (anteclass. and post-Aug.).—Of a convalescent: qui meliusculus esse coepit,Cels. 3, 22; Ter. Hec. 3, 2, 19.—Of things: si eris verax, ex tuis rebus feceris meliusculas,Plaut. Capt. 5, 2, 15; cf. v. 6: apes coloris meliusculi,Col. 9, 3, 2: facies,Sen. Ben. 1, 3: spes, rather more, Varr. ap. Non. 394, 10.— In neutr. sing.: meliusculum est monere,Plaut. Curc. 4, 2, 3.—Adv.: mĕlĭuscŭlē.
* Rather better, pretty well (class.): cum meliuscule tibi esset, when you were somewhat better (of a convalescent), * Cic. Fam. 16, 5, 1: jam valere,Fronto, Ep. ad M. Caes. 4, 12 Mai.
* Rather more, somewhat more: meliuscule quam satis fuerit, biberis,Plaut. Most. 4, 2, 51.
Charlton T. Lewis, Charles Short, A Latin Dictionary