Nag/næɡ/ Definition 1 of 3Pro Tip 1/3Negative Connotation Using 'nag' suggests annoyance and can sound critical if used to describe someone's behavior. Don't nag me about cleaning, I'll do it later. Pro Tip 2/3Repetitive Action 'Nag' emphasizes repetitive complaining or requests which can be irritating. My brother won't stop nagging me for video game money. Pro Tip 3/3Not Always Bad Sometimes 'nag' can be seen positively, as showing persistent concern. My fitness app nags me to exercise, and it's really helped me stay on track.