Entry 1 sense Webster, 1913 Nagging /(năg"gĭng)/ · Nag·ging · IPA /nˈæɡɪŋ/ 01 a. Fault-finding; teasing; persistently annoying; as, a nagging toothache. 1. Fault-finding; teasing; persistently annoying; as, a nagging toothache.[Colloq.]