untamable
ˌʌntəˈmeɪbəl
Definitions
1. adjective
Unable to be tamed or domesticated; unmanageable.
“The untamable wild mustang continued to run free in the open plains.”
2. adjective
Uncontrollable or unmanageable in one’s behavior or emotions.
“Her untamable temper often led to heated arguments with her colleagues.”