Superlative form of 'dewy'; the most covered with dew or having the greatest degree of dew-like moistness and glistening appearance.
From 'dewy' (Old English daug + '-y') + superlative suffix '-est.' The adjective marks the highest degree of dew coverage or dew-like qualities among multiple options.
The dewiest mornings are actually the coldest ones—dew forms more readily when there's a bigger temperature drop, so Victorian gardeners used heavy dew as a natural frost warning system!
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