1. Intermittently stopping and starting
   "off-and-on sleep"; "off-and-on static"
   - fitful, interrupted

1. Not regularly
   "they phone each other off and on"
   - on and off

See also: broken

• Flindersia schottiana
• flindosa
• flindosy
• fling
• fling off
• flint
• flint corn
• flint glass
• flint maize
• Flint River
• flinthead
• flintlock
• flintstone
• flinty
• flip
• flip chart
• flip one's lid
• flip one's wig
• flip out
• flip over
• flip side
• flip-flap
• flip-flop
• flippancy
• flippant