Lewis & Short

quantŭlus-cumque (or-cunque), ăcumque, umcumque, adj., however small, how little soever (class.): de hac meā, quantulacumque est, facultate quaeritis, Cic. de Or. 1, 30, 135: adfectus quantulicumque sunt, Sen. Ep. 85, 8: occasio, Juv. 13, 183: umor, Col. 2, 11, 7.
Neutr. as subst.: quantŭlumcumque, however small, however insignificant a thing: quicumque eramus, et quantulumcumque dicebamus, Cic. Or. 30, 106.
Separated: quantulum id cumque est, Cic. de Or. 2, 23, 97.
With gen.: quantulumcunque aquae vel ciborum inest, Col. 8, 9.
Adv.: quantŭlumcun-quē, in however small a degree: spem ejus, quae quantulumcunque restabat, comminuit, Val. Max. 1, 5, 6.