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

• disports
• disposabilities
• disposability
• disposable
• disposable income
• disposable incomes
• disposableness
• disposablenesses
• disposables
• disposal
• disposals
• dispose
• disposed
• disposedly
• dispose of
• disposer
• disposers
• disposes
• disposing
• disposingly
• disposings
• disposition
• dispositional
• dispositioned
• dispositions