Heyday: the period of one’s greatest popularity, vigor, or prosperity.
Do you Know? This is one of the very popular game on the market with the name hayday but our word is heyday.
“But there are few drive-in theaters left. They’ve dwindled to just a handful in the Twin Cities since their heyday in the 1950s and ’60s. There are only six left in Minnesota.” — Kathy Berdan, TwinCities.com (St. Paul, Minnesota), 26 July 2020