nag

Universal Words verb, noun verb (-gg-) ~ (at sb) 1 to keep complaining to sb about their behaviour or keep asking them to do sth: [V] Stop nagging-I'll do it as soon as I can. * [VNtoinf] She had been nagging him to paint the fence. [also VN] 2 to worry or irritate you continuously: [V] A feeling of unease nagged at her. * [VN] Doubts nagged me all evening. noun (old-fashioned, informal) a horse