WordWeb Online

1. [informal] A stupid incompetent person
   - dimwit [informal], nitwit [informal], half-wit [informal], doofus [N. Amer, informal], numpty [UK, informal], donkey [informal], nellie [informal], dingleberry [US, informal], noodle [informal], yo-yo [N. Amer, informal], dufus [N. Amer, informal], simp [N. Amer, informal]
    
2. [offensive] A male homosexual
    
3. [offensive] An effeminate man
   "he's such a nelly";

Type of: simple [archaic], simpleton

Encyclopedia: Nelly, the Bride Without a Husband