- heyday⇄heyday, noun, interjection.
- heyday⇄interj. exclamation of cheerfulness or wonder.
- heyday⇄noun the period of greatest strength, vigor, spirits, prosperity, or other quality or condition.
Ex. After years of emptiness and dullness and suppression, she [Queen Victoria] had come suddenly, in the heyday of youth, into freedom and power (Lyt