wacko or whacko /wakˈō/ (slang)

1. Mad
2. Eccentric

A deranged or eccentric person

• shrillings
• shrillness
• shrillnesses
• shrills
• shrill-tongued
• shrill-voiced
• shrilly
• sniffliest
• sniffling
• sniffly
• sniffs
• sniffy
• snift
• snifted
• snifter
• sniftered
• sniftering
• snifters
• snifter-valve
• snifter-valves
• sniftier
• sniftiest
• snifting
• snifting-valve
• snifts