heyday

UK: /ˈheɪ.deɪ/ | US: /ˈheɪ.deɪ/

Definition
  1. n. the period of greatest success, popularity, or vigor

Structure
hey <exclamation of joy>day <time>
Etymology

The word "heyday" originated in the late 16th century, combining "hey" (an exclamation of joy or surprise) and "day" (time). It originally expressed a sense of high spirits or excitement, later evolving to mean the peak period of success or vitality. The term reflects the idea of a "joyful time" or "prime period," capturing the exuberance of one's best days.

Examples
  1. The 1920s were the heyday of jazz music.

  2. The company reached its heyday in the 1990s.

  3. She often reminisces about the heyday of her acting career.

  4. The town’s heyday as a mining hub ended decades ago.

  5. His heyday as a champion boxer was unforgettable.