inordinate,
excessive,
unreasonable,
undue beyond normal limits; "excessive charges"; "a book of inordinate length"; "his dress stops just short of undue elegance"; "unreasonable demands"
exorbitant,
extortionate,
usurious,
outrageous,
unconscionable,
steep greatly exceeding bounds of reason or moderation; "exorbitant rent"; "extortionate prices"; "spends an outrageous amount on entertainment"; "usurious interest rate"; "unconscionable spending"
over-the-top,
extraordinary,
sinful (of an official) serving an unusual or special function in addition to those of the regular officials; "an ambassador extraordinary"
extreme most distant in any direction; "the extreme edge of town"
extreme most distant in any direction; "the extreme edge of town"
extremist,
ultra,
radical (used of opinions and actions) far beyond the norm; "extremist political views"; "radical opinions on education"; "an ultra conservative"
far located at a great distance in time or space or degree; "we come from a far country"; "far corners of the earth"; "the far future"; "a far journey"; "the far side of the road"; "far from the truth"; "far in the future"
