1. Showing a lack of intelligence or thought; stupid and silly
   - fatuous, inane, mindless, vacuous

See also: asininity, foolish

• phosphorous
• phosphorous acid
• phosphorus
• phosphoryl
• phot
• photalgia
• photic
• Photinia
• Photinia arbutifolia
• Photius
• photo
• photo credit
• photo finish
• photo op
• photo opportunity
• photo-offset
• photo-offset printing
• Photoblepharon
• Photoblepharon palpebratus
• photocathode
• photocell
• photochemical
• photochemical exchange
• photochemical reaction
• photochemistry