From Longman Dictionary of Contemporary Englishextravagantex‧trav‧a‧gant /ɪkˈstrævəɡənt/ ●●○ adjective 1 SPEND MONEYspending or costing a lot of money, especially more than is necessary or more than you can afford Would it be too extravagant to buy both? an extravagant lifestyle2 WASTE somethingdoing or using something too much or more than is necessaryextravagant with Don’t be too extravagant with the wine. an extravagant display of loyalty3 EXTREMEif someone makes extravagant claims, promises etc, they make big claims or promises that are not true or real extravagant claims about the drug’s effectiveness4 IMPRESSvery impressive because of being very expensive, beautiful etc extravagant celebrations —extravagantly adverb —extravagance noun [countable, uncountable] the extravagance of the Royal Palace His only extravagance (=the only expensive thing he bought) was fine wine.
Examples from the Corpus
extravagant• Nature abhors the superfluous, yet is constrained to produce the seemingly extravagant.• The Conservatives, on the other hand, protect the counties and suspect the great urban authorities of being extravagant.• Van Jong's personal life was notably extravagant.• Extravagant claims have been made for some herbal remedies including the curing of baldness.• The extravagant claims made were more significant for what they anticipated than for what could then be accomplished.• An extravagant collection of activities centered on the family shrine, as the sweet scent of incense hovered placidly above us.• When the air became more thickly populated, such extravagant forms disappeared.• Yet, as I said, you are not extravagant, I am.• If anything, we were too extravagant in the late 1980s when money was rolling in - we took everything for granted.• $400 on a dress! That's a bit extravagant, isn't it?• extravagant marketing claims• Rich and extravagant parents are spending more and more money on their children's parties.• Hundreds, thousands, and not one of them with sufficient imagination to try a really extravagant swindle.• The gifts, though not extravagant, were nice.From Longman Business Dictionaryextravagantex‧trav‧a‧gant /ɪkˈstrævəgənt/ adjective1disapproving spending a lot of money when it is not necessaryIt’s a bit too extravagant to buy both.Even when in debt, he continued to enjoy anextravagant lifestyle.2very extreme and not based on real factsThe advertisements makeextravagant claims, guaranteeing that you will stop smoking within 10 days.Origin extravagant (1300-1400) Medieval Latin Latin vagans, present participle of vagari “to wander about” 