Definition of heyday in English:

heyday

Line breaks: hey¦day
Pronunciation: /ˈheɪdeɪ
 
/

noun

(usually one's heyday)
The period of a person’s or thing’s greatest success, popularity, activity, or vigour: the paper has lost millions of readers since its heyday in 1964
More example sentences
  • In its heyday, only 30 years ago, just under 1,000 trawlers operated from the port.
  • Over three million people walked through its door every year in its heyday before the war.
  • You have to go back 10 years, to the heyday of Radio 1, to find a station with a bigger audience.
Synonyms
prime, peak, height, high point, high spot, peak of perfection, pinnacle, acme, zenith, day, time, bloom, flowering, culmination, crowning point; prime of life, best days, best years, salad days

Origin

late 16th century (denoting good spirits or passion): from archaic heyday!, an exclamation of joy, surprise, etc..

Definition of heyday in:

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