1. Free of smoke
   "smoke-free offices and restaurants"

See also: smokeless

• unformatted capacity
• unformed
• unforthcoming
• unfortunate
• unfortunate person
• unfortunately
• unfounded
• unframed
• unfree
• unfreeze
• unfrequented
• unfretted
• unfriended
• unfriendliness
• unfriendly
• unfrightened
• unfrock
• unfrosted
• unfrozen
• unfruitful
• unfueled
• unfuelled
• unfulfillable
• unfulfilled
• unfunctional