Partisan (noun) سخت گیر، پکا حامی، طرفدار

a strong supporter of a party, cause, or person.
Example: “partisans of the exiled Stuarts”
Incontrovertible (adjective) ناقابل تردید، بلا شبہ، غیر متنازعہ

not able to be denied or disputed.
Example: “incontrovertible proof”