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

• Ascensiontide
• ascensive
• ascent
• ascents
• ascertain
• ascertainable
• ascertained
• ascertained goods
• ascertaining
• ascertainment
• ascertainments
• ascertains
• asceses
• ascesis
• ascetic
• ascetical
• ascetically
• asceticism
• asceticisms
• ascetics
• asci
• ascian
• ascians
• ascidia
• ascidian