Excessive spending of money, or the quality of being expensive, wasteful, or going beyond reasonable limits.
From Latin 'extravagans' meaning wandering beyond, from 'extra' (beyond) and 'vagari' (to wander). The word originally meant straying from bounds and evolved to mean excessive behavior.
The Renaissance artist Michelangelo was called extravagant, yet his sculptures were so perfectly proportioned he basically invented modern anatomy—sometimes what looks like excessive spending creates foundations for entire fields.
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