[with obj.]harass (someone) constantly to do something that they are averse to 经常催促(或烦扰)(某人)去做他们不愿做的事情;唠叨 she constantly nags her daughter about getting married. 她经常向她的女儿唠叨女大当嫁的事。 [with infinitive]she nagged him to do the housework. 她唠叨着要他做家务。 [no obj.]he's always nagging at her for staying out late. 老是抱怨她很晚才回家。 ■[often as adj. nagging]be persistently painful, troublesome, or worrying to 不断烦扰;跟…纠缠不休 there was a nagging pain in his chest. 胸口的疼痛折磨得他不得安宁。 [no obj.]something nagged at the back of his mind. 有件事一直在他的脑海中盘旋。
noun
a person who nags someone to do something 唠叨不休的人 ■a persistent feeling of anxiety 持续的焦虑感 he felt once again that little nag of doubt. 那丝疑虑又一次缠上了他。
early 19th cent. (originally dialect in the sense 'gnaw'): perhaps of Scandinavian or Low German origin; compare with Norwegian and Swedish nagga 'gnaw, irritate' and Low German (g)naggen 'provoke'
nag2 noun
(informal, often derogatory)a horse, especially one that is old or in poor health (非正式,常贬)老马,驽马 ■(archaic)a horse suitable for riding rather than as a draught animal (古)骑乘的小型马