KEY: Both.
SYN: Twain.
ANT: Neither.

• Unfavorable, [See FAITHFUL]
• Unfeeling
• Unfeigned
• Unfitness
• Unfit, {[o]?}
• Unfit \v
• Unfold
• Unforgiving
• Unfortunate
• Unfounded
• Unfrequented
• Unfriendly
• Unfruitful, [See FRIENDLY]
• Ungainly
• Ungovernable
• Ungraceful
• Ungrateful
• Ungulp, [See GULP]
• Unhandy
• unhappiness
• Unhappy
• Unhealthy, [See BEHALF]
• Uniform
• Uninteresting
• Uninterrupted