KEY: Musty.
SYN: Fusty, rank, mouldy, frowzy, stale, sour, fetid, mildewed.
ANT: Fragrant, fresh, balmy, aromatic, odorous.

• Unpleasant, [See PARDONABLE]
• Unprecedented
• Unprincipled, [See EXCEPTIONAL_and_RARE]
• Unprofitable
• Unqualified
• Unquestionable
• Unreasonable
• Unrelenting
• Unrighteous
• Unrivalled
• Unroll
• Unruffled, [See DISCOVER]
• Unruly
• Unsafe, [See REFRACTORY]
• Unseasonable, [See SAFE]
• Unseemly
• Unseen
• Unselfish, [See SEEMLY]
• Unsettle
• Unskillful, [See SETTLE]
• Unsophisticated, SIMPLE_==_key:, Unsound, SOUND_==_key:,
• Unsteady
• Unsuccessful
• Untrodden
• Untruth