Heyday

The period when a person, activity, or institution had its greatest success, strength, or popularity.

Reach for it when locating a recognized peak while avoiding the assumption that all later work declined

In its heyday, the theater presented a new community production every month.

• playful

  glory days

  nostalgic affection for past success is intentional

  not when Glory days often implies present decline and can sound self-congratulatory.

• everyday

  high point

  one especially successful phase should be named plainly

  not when A single high point can interrupt an otherwise weak period; a heyday is sustained.

• everyday

  prime

  a person's or thing's strongest period is meant

  not when Prime can refer to physical condition or readiness, not public success.

• professional

  peak

  the highest measured level is the relevant fact

  not when Peak can last only a moment and carries less historical character than heyday.

• formal

  zenith

  the absolute high point suits elevated prose

  not when Zenith is grand and singular, while a heyday can extend across years.

• literary

  golden age

  a whole era is remembered for flourishing achievement

  not when Golden age can romanticize the past and omit who was excluded from its benefits.

• decline
• nadir
• low point

• in its heyday

  In its heyday, the mill employed craftspeople from six villages.

• during the heyday

  During the heyday of rail travel, the station served overnight routes.

• return to its heyday

  The club does not need to return to its heyday to serve today's neighborhood well.