wacko or whacko /wakˈō/ (slang)

1. Mad
2. Eccentric

A deranged or eccentric person

• steam chest
• steam chests
• steam coal
• steam coals
• steam-driven
• steamed
• steamed up
• steam engine
• steam engines
• steamer
• steamer clam
• steamer clams
• steamer duck
• steamer ducks
• steamers
• steam gauge
• Scientology®
• sci. fa.
• sci-fi
• scil.
• scilicet
• scilla
• scillas
• Scillonian
• scimitar