ff or ff.

1. Fecerunt (Latin), (they) did it or made it
2. Folios (printing)
3. Following pages, lines, etc
4. Fortissimo (music)

FF

1. Form feed (computing)
2. French franc or francs

• Wheatstone
• Wheatstone's bridge
• wheatworm
• wheatworms
• wheaty
• whee
• wheech
• wheeched
• wheeching
• wheechs
• wheedle
• wheedled
• wheedler
• wheedlers
• wheedles
• wheedlesome
• wheedling
• wheedlingly
• wheedlings
• wheel
• wheel and axle
• wheel and deal
• wheel animal
• wheel animalcule
• wheel animals