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

• Drosera
• Droseraceae
• droshky
• drosky
• drosophila
• Drosophila melanogaster
• Drosophilidae
• Drosophyllum
• Drosophyllum lusitanicum
• dross
• drossy
• drought
• droughty
• drouth
• drove
• drove chisel
• drover
• drown
• drown out
• drowse
• drowse off
• drowsily
• drowsiness
• drowsing
• drowsy