Unavoidable (adjective) — لا مفر منه: Not able to be avoided. Below are 6 words with a similar meaning; the linked ones have full GL Dictionary entries with their meaning in Arabic.
Impossible to avoid or deny.
Sure; definite; free from doubt — known with confidence after evidence, not guesswork; an adjective of certainty, not the noun ceremony and not the verb certify
Needed to be done or present; essential.
inevitableunpreventablefated