Showy, bright, and eye-catching in a way that might seem overdone or lacking in taste; ostentatious.
From 'flash' (a sudden burst of light), possibly from Old Norse 'flaska' or onomatopoeia, combined with the suffix '-y' meaning 'having the quality of.'
Flashy colors and designs actually trigger the same brain regions as movement—which is why predators use bright flashing patterns to stun prey, and why flashy fashion literally hijacks your visual attention system.
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