1. Having a taste that is a mixture of bitterness and sweetness
   - bittersweet

See also: tasty

• unsolvability
• unsolvable
• unsolved
• unsophisticated
• unsorted
• unsought
• unsound
• unsoundable
• unsounded
• unsoundness
• unsourced
• unsoured
• unsown
• unspaced
• unsparing
• unsparingly
• unspeakable
• unspeakably
• unspecialised
• unspecialized
• unspecific
• unspecified
• unspectacular
• unspell
• unspent