The word "extravagance" is a noun that means The quality of exceeding the bounds of reason or necessity; excessive expenditure.. In Bengali, it is expressed as "অপব্যয়, অমিতব্যয়িতা, অপচয়", which carries the same essential meaning. For example: "Her extravagance with jewelry was well-known.". Understanding "extravagance" enhances vocabulary and improves language comprehension for both English and Bengali speakers.