Adjective unnatural has 3 senses
  1. unnatural - not in accordance with or determined by nature; contrary to nature; "an unnatural death"; "the child's unnatural interest in death"
    Antonyms:
    natural, earthy, elemental
  2. affected, unnatural - speaking or behaving in an artificial way to make an impression
  3. grotesque, monstrous, unnatural - distorted and unnatural in shape or size; abnormal and hideous; "tales of grotesque serpents eight fathoms long that churned the seas"; "twisted into monstrous shapes"
    Antonym: beautiful (indirect, via ugly)
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