From Middle English untame, ontame, equivalent to un- (“not”) + tame.
untame (comparative more untame, superlative most untame)
- not tame; wild
From Middle English untamen, *untemien (attested as untemed), equivalent to un- (“back; reverse”) + tame.
untame (third-person singular simple present untames, present participle untaming, simple past and past participle untamed)
- (transitive) To make untame; make wild