nagnæg(v.; n.)nagged, nag•ging

1. (v.t.)to annoy by persistent faultfinding, complaints, or demands.

2. to be a constant source of unease or irritation to:

   Her doubts nagged her.

3. (v.i.)to find fault or complain, esp. in an irritating and persistent manner.

4. to cause pain, distress, etc.

5. (n.)a person who nags.

6. an act or instance of nagging.

Origin of nag:

1815–25; perh. < ON nagga to rub, grumble, quarrel; cf. earlier knaggie given to nagging

nag′ger(n.)

nagnæg(n.)

1. an old or worthless horse.

2. any horse.

Origin of nag:

1350–1400; late ME nagge; obscurely akin to D neg(ge) small horse