Webster's Revised Unabridged Dictionary · 1913

Exorbitant

Exorbitant , adjective

[Latin exorbitans, -antis, present participle of exorbitare to go out of the track; ex out + orbita track: compare French exorbitant. See Orbit.]

1.
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.
Foul exorbitant desires. — Milton
2.
Not comprehended in a settled rule or method; anomalous.
The Jews... [were] inured with causes exorbitant, and such as their laws had not provided for. — Hooker