1. Foolish; totally unsound
   - crazy, half-baked, screwball

See also: impractical

• sleeplessly
• sleeplessness
• sleepover
• sleepwalk
• sleepwalker
• sleepwalking
• sleepwear
• sleepy
• sleepy dick
• sleepy sickness
• sleepy-eyed
• sleepyhead
• sleepyheaded
• sleet
• sleety
• sleeve
• sleeved
• sleeveless
• sleigh
• sleigh bed
• sleigh bell
• sleight
• sleight of hand
• slender
• slender centaury