Merriam-Webster Collegiate Dictionary - extravagant

 adjective  Etymology: Middle English, from Middle French, from Medieval Latin ~-, extravagans, from Latin extra- + vagant-, vagans, present participle of vagari to wander about, from vagus wandering  Date: 15th century  1.  a. obsolete strange, curious  b. archaic wandering  2.  a. exceeding the limits of reason or necessity ~ claims  b. lacking in moderation, balance, and restraint ~ praise  c. extremely or excessively elaborate an ~ display  3.  a. spending much more than necessary has always been ~ with her money  b. profuse, lavish  4. extremely or unreasonably high in price an ~ purchase  Synonyms: see excessive  • ~ly adverb