A flaw, defect, or quality of not being perfect or complete.
From Latin 'imperfectus' (in- meaning 'not' + perfectus meaning 'finished or complete'), combined with the suffix '-ion' to create a noun. The word entered English in the 14th century to describe anything lacking completeness or flawlessness.
Japanese aesthetics have a whole philosophy called 'wabi-sabi' that celebrates imperfection as beautiful—suggesting that our modern obsession with perfection might actually be cultural rather than universal, and that imperfections are what make things genuinely interesting.
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