Without any imperfections, mistakes, or defects; completely perfect.
From 'flaw' (Middle English, from Old Norse 'flaga' meaning chip or fragment) plus suffix '-less'. The concept of being without flaws emerged in Middle English as craftsmanship standards developed.
In gemology, 'flawless' has a precise technical definition - diamonds with no internal inclusions or external blemishes visible under 10x magnification. This scientific precision contrasts with everyday usage where 'flawless' often means simply 'very good.'
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