The quality or state of being flash; showiness or the characteristic of occurring suddenly and brightly.
Formed from 'flash' (either as noun or adjective) + '-ness' (abstract noun suffix), though less standard than 'flashiness.'
The fact that 'flashness' exists alongside 'flashiness' shows how English sometimes develops multiple noun forms—most speakers prefer 'flashiness,' but 'flashness' is theoretically valid.
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