UNCOMPROMISING (adjective) definition and synonyms | Macmillan Dictionary.
Is unsure an adjective or adverb?
UNSURE (adjective) definition and synonyms | Macmillan Dictionary.
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.