Exorbitant (adjective) — مُفرط: Much too high, especially of a price or demand. Below are 8 words with a similar meaning; the linked ones have full GL Dictionary entries with their meaning in Arabic.
More than is needed, allowed or reasonable.
Far too high, especially of a price; involving demanding money by threats.
Shockingly bad or excessive.
Rising or falling sharply; very high (price); to soak.
Not fair or sensible.
inflatedsky-highimmoderate
So high or severe as to prevent action; also forbidding.