Not compromised, without defects.

Is it uncompromising or uncompromised?

(1) No. "Uncompromising" and "uncompromised" are not the same. Here, "uncompromising" means "very firm", "unwavering". (2) Possibly - but a stand against something sounds better to me than a stance against something.

What is the definition of uncompromised?

: not making or accepting a compromise : making no concessions : inflexible, unyielding. Other Words from uncompromising Synonyms & Antonyms Example Sentences Learn More About uncompromising.