untamed

/ʌnˈteɪmd/
adjective
  1. Not domesticated or controlled by humans; wild.
    • She preferred the untamed beauty of the ocean to any man-made garden.
    • The untamed horse galloped freely across the plains.
    • Explorers ventured into the untamed wilderness of the Amazon.
  2. Not restrained, disciplined, or brought under control; unruly or free.
    • She had an untamed spirit that refused to follow any rules.
    • His untamed creativity often led to brilliant but chaotic ideas.
    • The child's untamed energy exhausted every babysitter.