Related Clues:

• Big oaf
• Simple tool user
• Lummox
• Clumsy one, slangily
• Mock, in a way
• Out of one's gourd
• One way to go
• Monkey's uncle?
• Tailless primate
• Evolutionist's kin?
• One of Goodall's group
• Excessively enthusiastic
• Tarzan pal
• Going ___
• J. Fred Muggs, for one