# aegis

/ˈidʒəs/ (US) · /ˈiːdʒɪs/ (UK) · CEFR C1 · Noun

Source: https://englishreference.com/word/aegis
Updated: 2026-05-31

## Definition

the protection, support, or control of a person or organization. You use this when someone is doing something under the guidance of a larger group.

For teachers: the protection, backing, or support of a particular person or organization. Often used in the prepositional phrase 'under the aegis of'.

## Examples

- The project began under the aegis of the university.
- Medical relief efforts in the region were coordinated under the aegis of the Red Cross to ensure safety.
- While the negotiations were technically private, they took place under the aegis of the United Nations to provide a neutral ground for both parties.

## Usage notes

- Typically appears in the fixed phrase 'under the aegis of'.

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