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

• overweighing
• overweighs
• overweight
• over-weighted
• overweighted
• overweighting
• overweights
• overwent
• overwhelm
• overwhelmed
• overwhelming
• overwhelmingly
• overwhelmingness
• overwhelmings
• overwhelms
• overwind
• overwinding
• overwinds
• overwing
• overwinged
• overwinging
• overwings
• overwinter
• overwintered
• overwintering