—v.t. 1. to annoy by persistent faultfinding, complaints, or demands.
2. to keep in a state of troubled awareness or anxiety, as a recurrent pain or problem: She had certain misgivings that nagged her.
—v.i. 1. to find fault or complain in an irritating, wearisome, or relentless manner (often fol. by at): If they start nagging at each other, I'm going home. 2. to cause pain, discomfort, distress, depression, etc. (often fol. by at): This headache has been nagging at me all day.
—n. 1. Also,nagger.a person who nags, esp. habitually.
2. an act or instance of nagging.
Pronunciation: (nag),[key] —n. 1. an old, inferior, or worthless horse.
2. Slang.any horse, esp. a racehorse.
3. a small riding horse or pony.