1. Lacking seriousness; given to frivolity
   - dizzy, empty-headed, featherbrained, giddy, light-headed, lightheaded, silly

See also: frivolous

• briary
• bribable
• bribe
• briber
• bribery
• bric-a-brac
• brick
• brick cheese
• brick in
• brick over
• brick red
• brick trowel
• brick up
• brick-shaped
• brickbat
• Brickellia
• brickfield
• brickfielder
• brickie
• brickkiln
• bricklayer
• bricklayer's hammer
• bricklaying
• brickle
• brickly