extravagant
Pronunciation: /ɪkˈstravəg(ə)nt, ɛk-/
adjective
- lacking restraint in spending money or using resources: it was rather extravagant to buy both
- resulting from or showing a lack of restraint in spending money or resources: extravagant gifts like computer games
- exceeding what is reasonable or appropriate; excessive or elaborate: extravagant claims about the merchandise

Origin:
late Middle English (in the sense 'unusual, unsuitable'): from medieval Latin extravagant- 'diverging greatly', from the verb extravagari, from Latin extra- 'outside' + vagari 'wander'