Incumbent (adjective) عہدہ دار، سرکاری ملازم

necessary for (someone) as a duty or responsibility.
Example: “the government realized that it was incumbent on them to act”
Synonyms: binding, obligatory, mandatory, necessary, compulsory, required, requisite, essential, imperative
Antonyms: optional
Assert (verb) وثوق سے کہنا، حق جتانا

state a fact or belief confidently and forcefully.
Example: “the company asserts that the cuts will not affect development”
Synonyms: declare, maintain, contend, argue, state, claim, propound, submit, posit
Antonyms: deny, disavow, disclaim, negate, question