wacko or whacko /wakˈō/ (slang)

1. Mad
2. Eccentric

A deranged or eccentric person

• unwomans
• unwon
• unwont
• unwonted
• unwontedly
• unwontedness
• unwontednesses
• unwooded
• unwooed
• unworded
• unwork
• unworkable
• unworked
• unworking
• unworkmanlike
• unworks
• unworldlier
• unworldliest
• unworldliness
• unworldlinesses
• unworldly
• unwormed
• unworn
• unworried
• unworshipful