1. The cardinal number that is the sum of five and one
   - six, 6, VI, sixer, sise, Captain Hicks, half a dozen, sextet, sestet, sextuplet

Derived forms: hexads

Type of: digit, figure

• unforesightful
• unforested
• unforethoughtful
• unforfeitable
• unforgettable
• unforgettably
• unforgivable
• unforgivably
• unforgiving
• unforgivingly
• unformatted capacity
• unformed
• unforthcoming
• unfortunate
• unfortunate person
• unfortunately
• unfounded
• unframed
• unfree
• unfreeze
• unfrequented
• unfretted
• unfriended
• unfriendliness
• unfriendly