1nag 
/ˈnæg/ verb
nags; nagged; nag·ging /ˈnæg/ verb 1 a : to annoy (someone) by often complaining about his or her behavior, appearance, etc. [+ obj] — + about ▪ My wife nags me about my busy work schedule.
▪ Mom's always nagging me about my hair. [no obj] ▪ All you ever do is nag.
b : to annoy (someone) with repeated questions, requests, or orders [+ obj] ▪ My parents are always nagging me to clean my room. ▪ He kept nagging her until she agreed to see the movie. [no obj] ▪ Quit nagging! I already said I'm not going. 2 : to cause (someone) to feel annoyed or worried for a long period of time [+ obj] ▪ She's still nagged [=bothered] by the thought that she could have done better. [no obj] — often + at ▪ The problem has been nagging at me for weeks.
▪ Mom's always nagging me about my hair. [no obj] ▪ All you ever do is nag.
b : to annoy (someone) with repeated questions, requests, or orders [+ obj] ▪ My parents are always nagging me to clean my room. ▪ He kept nagging her until she agreed to see the movie. [no obj] ▪ Quit nagging! I already said I'm not going.
— nagging /ˈnægɪŋ/ adjective always used before a noun [more nagging; most nagging]
▪ A few nagging questions/problems remain. ▪ I have this nagging doubt/feeling/fear/suspicion that our troubles aren't over yet. ▪ a nagging headache/cough/pain ▪ nagging injuries that just won't heal
▪ A few nagging questions/problems remain. ▪ I have this nagging doubt/feeling/fear/suspicion that our troubles aren't over yet. ▪ a nagging headache/cough/pain ▪ nagging injuries that just won't heal
