heyday

(hā′dā′)

noun

the time of greatest health, vigor, success, prosperity, etc.; prime

Origin: ME hei dai, full daylight, well on in the day < hei, high + dai, day

interjection

Archaic used to express surprise, joy, or wonder

Origin: earlier heyda prob. < (or akin to) Ger & Dan heida, Du heidaar, hey there!: see hey

See heyday in American Heritage Dictionary 4

noun

The period of greatest popularity, success, or power; prime.

Origin:

Origin: Perhaps alteration of heyda, exclamation of pleasure

Origin: , probably alteration of Middle English hey, hey

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