Lewis & Short

ăcūtŭlus, a, um, adj. dim. [acutus], somewhat pointed, acute, or subtile: conclusiones, * Cic. N. D. 3, 7, 18: doctores, Gell. 17, 5.
Adv.: ăcūtŭle, somewhat sharply, Aug. Conf. 3, 7.