KEY: Tortuous.
SYN: Devious, circuitous, anfractuous, ambiguous, complicated,sinuous, deceitful, crooked, twisting, indirect, sinister, indexed.
ANT: Right, straight, direct, rectilinear, straightforward,undeviating.

• Union
• Unique
• Unison
• Unit
• Unite
• Unity
• Universal
• Unjust, [See COMMON]
• Unknown
• Unlawful, [See OBSCURE]
• Unlearned, [See EAST]
• Unlike, [See LEARNED]
• Unlimited, [See_PURE]
• Unlucky, [See BOUNDLESS]
• Unmistakable
• Unnecessary
• Unpardonable
• Unpleasant, [See PARDONABLE]
• Unprecedented
• Unprincipled, [See EXCEPTIONAL_and_RARE]
• Unprofitable
• Unqualified
• Unquestionable
• Unreasonable
• Unrelenting