1. A direction in music; to be played very loudly
   - fortissimo, very loudly

Encyclopedia: Ff

• ethylene glycol
• ethylene tetrachloride
• ethylenediaminetetraacetic acid
• ethyne
• Etienne-Louis Arthur Fallot
• etiolate
• etiolated
• etiolation
• etiologic
• gharry
• ghastliness
• ghastly
• ghat
• ghatti
• ghatti gum
• ghazi
• GHB
• Ghedda wax
• ghee
• Gheg
• Gheg dialect
• Ghent
• gherao
• gherkin
• ghetto