wacko or whacko /wakˈō/ (slang)

1. Mad
2. Eccentric

A deranged or eccentric person

• adventurer
• adventurers
• adventures
• adventuresome
• adventuress
• adventuresses
• adventuring
• adventurism
• adventurisms
• adventurist
• adventuristic
• adventurists
• adventurous
• adventurously
• adventurousness
• adventurousnesses
• adverb
• adverbial
• adverbialise
• adverbialised
• adverbialises
• adverbialising
• adverbialize
• adverbialized
• adverbializes