1. Inability to see the colour blue or to distinguish the colours blue and yellow
   - blue-blind

See also: blind, tritanopia, unsighted

• fifth cranial nerve
• Fifth Crusade
• Fifth Lateran Council
• fifth part
• fifth wheel
• fifthly
• fifties
• fiftieth
• fifty
• fifty dollar bill
• fifty percent
• fifty-cent piece
• fifty-eight
• fifty-fifth
• fifty-fifty
• fifty-five
• fifty-four
• fifty-nine
• fifty-one
• fifty-seven
• fifty-six
• fifty-three
• fifty-two
• fig
• fig leaf