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1. Spending money or using resources excessively or wastefully
   - prodigality, profligacy
    
2. The quality of exceeding the appropriate limits of decorum, probability or truth
   "we were surprised by the extravagance of his description";
   - extravagancy
    
3. The activity of excessive spending
   - prodigality, lavishness, highlife, high life
    
4. Something that is desired or appreciated but costs more than one would usually spend
   - indulgence, treat

Derived forms: extravagances

Type of: dissipation, excess, excessiveness, improvidence, inordinateness, shortsightedness, waste, wastefulness

Encyclopedia: Extravagance