1. Having or covered with protective barbs or quills or spines or thorns or setae etc.
   - barbed, barbellate, briery, bristled, bristly, burred, burry, prickly, setose, setaceous, spiny, thorny

See also: armed, briar

• unobtrusively
• unobtrusiveness
• unobvious
• unoccupied
• unoffending
• unofficial
• unofficially
• unoiled
• unopen
• unopened
• unopposable
• unopposed
• unordered
• unorganised
• unorganized
• unoriented
• unoriginal
• unoriginality
• unoriginally
• unoriginated
• unornamented
• unorthodox
• unorthodoxy
• unostentatious
• unowned