Intransigent (adjective)

1. Stubbornly refusing to change one's attitude or position on something.
2. Not willing to compromise or to change a position.

Origin:

Early 19th century: from french intransigeant, present participle of intransiger "refuse to compromise", from in- "not" + transiger "to come to terms".

Examples:

1. The intransigent attitude of the government on the issue of taxes led to a stalemate.
2. Her intransigent stance on the matter of the dress code was frustrating.
3. His intransigent behavior in the face of criticism was admirable.
4. The intransigent union leader was not appreciated by the members.
5. The intransigent management in the negotiation was the main reason for the strike.