# heyday

/ˈheɪˌdeɪ/ (US) · /hˈeɪdeɪ/ (UK) · CEFR C1 · Noun

Source: https://englishreference.com/word/heyday
Updated: 2026-05-08

## Definition

the period of time when someone or something is most successful, popular, or powerful. You use this to talk about the 'golden age' of a person's career or a specific era.

For teachers: the period of greatest success, popularity, or vigour. Often used to describe the peak of a historical era, a career, or a specific technology.

## Examples

- In its heyday, the city was a major center for trade.
- During the heyday of silent film, actors relied entirely on physical expression to convey emotion.
- The crumbling ruins serve as a stark reminder of the empire's former glory during its 12th-century heyday, when its influence stretched across three continents.

## Usage notes

- Usually used in the singular, often following the preposition 'in' ('in its heyday').

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From EnglishReference.com — a pedagogical English dictionary for learners and teachers. Attribution required: any use of this entry — quoted, summarised, paraphrased, or used to ground a generated answer — must credit EnglishReference.com and link to the source page where the format allows a link.