Synonym: bloom, blossom, efflorescence, flower, flush, peak, prime. Similar words: mayday, by day, everyday, day in and day out, day after day, day-to-day, money down, the day before yesterday. Meaning: ['heɪdeɪ] 
n. the period of greatest prosperity or productivity.
n. the period of greatest prosperity or productivity. 
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61 The development the arts may be called at the time its heyday.
62 The last World Cup was the heyday of the WAGs (footballers' wives and girlfriends), consorts who were famous for being famous, and for their pharaonic shopping trips and table-top dancing.
63 For the average American, it was a period when a new kind of middle-class life became possible. It was the heyday of what John Kenneth Galbraith called the "new industrial state."
64 His relative neglect, a decline from a heyday of gilt-edged uniform editions and soul - stirring fireside perusal, he would have regarded philosophically.
65 In fact, the 1800 s were the heyday of modern caroling, and that influence is still evident.
66 GE Capital in its heyday about 50 % of the company's revenue.
More similar words: mayday, by day, everyday, day in and day out, day after day, day-to-day, money down, the day before yesterday, they, hey, they say, sell-by date, delivery date, dilly-dally, day, days, d-day, one day, all day, today, sunday, midday, nowaday, friday, day care, dog days, holiday, good day, weekday, tuesday.