1. Ludicrous, foolish
   - cockamamie [N. Amer], goofy, sappy, silly, wacky, whacky, zany

See also: foolish

• owl
• owlclaws
• owlet
• owlet moth
• owlish
• owlishly
• OWLT
• own
• own goal
• own right
• own up
• owned
• owner
• owner-driver
• owner-occupied
• owner-occupier
• ownerless
• ownership
• ox
• ox-eyed
• ox-eyed daisy
• oxacillin
• oxalacetate
• oxalacetic acid
• oxalate