quick (adj.) 4
sharp, keen, alert
TG IV.ii.61 [Host to disguised Julia] You have a quick ear
TN I.i.9 [Orsino as if to love] how quick and fresh art thou
TS IV.ii.11 [Hortensio as Licio to Tranio as Lucentio, of Lucentio as Cambio courting Bianca] Quick proceeders
WT IV.iv.667 [Autolycus alone] a quick eye ... is necessary for a cutpurse