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

See also: frivolous

• saw-toothed
• Sawan
• sawbill
• sawbones
• sawbuck
• sawdust
• sawdust doll
• sawdust mushroom
• sawdust saloon
• sawed-off
• sawed-off shotgun
• sawer
• sawfish
• sawfly
• sawhorse
• sawing machine
• sawm
• sawmill
• sawn-off
• sawn-off shotgun
• sawpit
• sawtooth
• sawtoothed-edged
• sawwort
• sawyer