wacko or whacko /wakˈō/ (slang)

1. Mad
2. Eccentric

A deranged or eccentric person

• river mouths
• river mussel
• river mussels
• river novel
• river-rat
• river-rats
• rivers
• river sand
• riverscape
• riverscapes
• riverside
• riversides
• river-terrace
• river-terraces
• river-tide
• river-tides
• riverwalk
• riverwalks
• river wall
• river walls
• river water
• riverway
• riverways
• riverweed
• riverweeds