1. Lacking sense or discretion
   - rattlebrained, rattlepated, scatty [Brit] 
2. Guided by whim and fancy
   - flighty, flyaway, head-in-the-clouds

See also: foolish, frivolous

• homer
• Homer A. Thompson
• Homer Armstrong Thompson
• Homer Thompson
• Homeric
• homeroom
• homesick
• homesickness
• homespun
• homestead
• homestead law
• homesteader
• homestretch
• hometown
• homeward
• homeward-bound
• homewards
• homework
• homework problem
• homey
• homicidal
• homicide
• homie
• homiletic
• homiletical