# main act

CEFR B1 · Compound

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

## Definition

the most important performer or group at a concert or show. They usually perform last after the smaller acts have finished.

For teachers: the primary performer or ensemble in a multi-act entertainment program, typically receiving top billing and performing the final, longest set.

## Examples

- We arrived late and almost missed the main act.
- The crowd grew restless during the long wait between the opening bands and the main act.
- While the supporting performers were talented, the main act commanded the stage with a level of charisma that justified their headliner status.

## Usage notes

- often used interchangeably with 'headliner' in the context of music festivals and comedy shows.
- Teaching tip: contrast this with 'opening act' or 'support act' to help students understand the hierarchy of a performance schedule.

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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.