wacko or whacko /wakˈō/ (slang)

1. Mad
2. Eccentric

A deranged or eccentric person

• stunner
• stunners
• stunning
• stunningly
• stunnings
• stuns
• stunsail
• stuns'l
• stunt
• stunted
• stuntedness
• stuntednesses
• stunting
• stuntman
• stuntmen
• stunts
• stuntwoman
• stupa
• stupas
• stupe
• stuped
• stupefacient
• stupefacients
• stupefaction
• stupefactions