exorbitant

EXORB'ITANT, a. [L. exorbitans.] Literally, departing from an orbit or usual track. Hence, deviating from the usual course; going beyond the appointed rules or established limits of right or propriety; hence, excessive; extravagant; enormous. We speak of exorbitant appetites and passions; exorbitant demands or claims; exorbitant taxes.