dull (adj.)
insensitive, incapable of sensation
CE V.i.317[Egeon to Antipholus and Dromio of Ephesus] Yet hath ... / My dull deaf ears a little use to hear
WT I.ii.421[Polixenes to Camillo] Turn then my freshest reputation to / A savour that may strike the dullest nostril / Where I arrive
SHAKESPEARE'S WORDS © 2018 DAVID CRYSTAL & BEN CRYSTAL