1. Without proper consideration or reflection
   "unconsidered words"; "prejudice is the holding of unconsidered opinions"
   - inconsiderate

See also: thoughtless

• flannelette
• Flannery O'Connor
• flap
• flap down
• flapcake
• flapdoodle
• flapjack
• flapper
• flapping
• flaps
• flare
• flare out
• flare pass
• flare path
• flare star
• flare-up
• flaring
• flash
• flash butt welding
• flash camera
• flash in the pan
• flash lamp
• flash memory
• flash welding
• flash-forward