heyday
heyday definition
hey·day (hā′dā′)
noun
the time of greatest health, vigor, success, prosperity, etc.; prime
Etymology: ME hei dai, full daylight, well on in the day < hei, high + dai, day
interjection
Archaic used to express surprise, joy, or wonder
Etymology: earlier heyda prob. < (or akin to) Ger & Dan heida, Du heidaar, hey there!: see hey
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