greatly exceeding bounds of reason or moderation; "exorbitant rent"; "extortionate prices"; "spends an outrageous amount on entertainment"; "usorious interest rate"; "unconscionable spending"

Departing from an orbit or usual track; hence, deviating from the usual or due course; going beyond the appointed rules or established limits of right or propriety; excessive; extravagant; enormous; inordinate; as, exorbitant appetites and passions; exorbitant charges, demands, or claims.

Going beyond what is expected; excessive.

Not comprehended in a settled rule or method; anomalous.