in (one's) heyday

(redirected from in his hayday)
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in (one's) heyday

In, at, or during the period of one's greatest success, power, vigor, etc. In my heyday as a stock broker, I was making millions of dollars each year, but when the economy crashed, I lost nearly everything.
References in periodicals archive ?
They flashed his name up on the screen in case viewers didn't twig that the grey-haired old geezer in the golf sweater was the cheekie chappie in the dinner suit who was rarely off the box in his hayday.