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Adjective: thorny (thornier,thorniest)  thor-nee
  1. Bristling with perplexities
    "the thorny question of states' rights"
  2. Having or covered with protective barbs or quills or spines or thorns or setae etc.
    "a horse with a short thorny mane";
    - barbed, barbellate, briary, briery, bristled, bristly, burred, burry, prickly, setose, setaceous, spiny

Derived forms: thorniest, thornier

See also: armed, difficult, hard