KEY: Smoke \.\\.
SYN: Fumigation, fumes, vapor, insubstantiality, nothingness,moonshine, triviality, trifle.
ANT: Substance, reality, realization, moment, importance.

• Uneasy
• Uneducated
• Unequal
• Unequalled
• Unerring
• Unexpected
• Unfair
• 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]