1. Incapable of being retracted or revoked
   - irrevocable

See also: sealed

• Ficus deltoidea
• Ficus diversifolia
• Ficus elastica
• Ficus religiosa
• Ficus rubiginosa
• Ficus sycomorus
• fid
• fiddle
• fiddle with
• fiddle-faddle
• fiddle-shaped
• fiddlehead
• fiddlehead fern
• fiddleneck
• fiddler
• fiddler crab
• fiddlestick
• fiddlesticks
• fiddling
• fiddly
• Fidel Castro
• Fidel Castro Ruz
• fidelity
• fidget
• fidgetiness