a. Exceeding reasonable bounds: extravagant demands. See Synonyms at excessive.
b. Unreasonably high in cost; exorbitant: extravagant fees.
c. Lavish or imprudent in spending money: extravagant members of the imperial court.
2. Extremely abundant; profuse: extravagant vegetation.
3. Archaic Straying beyond limits or bounds; wandering.
[Middle English, unusual, rambling, from Old French, from Medieval Latin extrāvagāns, extrāvagant-, present participle of extrāvagārī, to wander : Latin extrā, outside; see EXTRA- + Latin vagārī, to wander.]
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Indo-European & Semitic Roots Appendices
Thousands of entries in the dictionary include etymologies that trace their origins back to reconstructed proto-languages. You can obtain more information about these forms in our online appendices:
The Indo-European appendix covers nearly half of the Indo-European roots that have left their mark on English words. A more complete treatment of Indo-European roots and the English words derived from them is available in our Dictionary of Indo-European Roots.