Used and loved by millions
Since I tried Ludwig back in 2017, I have been constantly using it in both editing and translation. Ever since, I suggest it to my translators at ProSciEditing.

Justyna Jupowicz-Kozak
CEO of Professional Science Editing for Scientists @ prosciediting.com
aegis
Grammar usage guide and real-world examplesUSAGE SUMMARY
"aegis" is a correct and usable word in written English.
It is used to refer to protection, especially when provided by someone in a position of authority or power. For example: "The small business was protected under the aegis of the government's economic policy."
✓ Grammatically correct
News & Media
Formal & Business
Science
Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Human-verified examples from authoritative sources
Exact Expressions
59 human-written examples
"There is an issue in the medium term about people who have saved under the aegis of certain rules.
News & Media
A rash of closings of McDonald's restaurants across the country, supposedly for "sanitary" reasons, is another sign of how even the most seemingly uncontroversial businesses can get caught up in the current mood.Mr Putin distrusts what he does not control, and seeks constantly to bring any source of power and influence under the aegis of the state.
News & Media
Under his aegis, he added, half the savings would be found in the welfare budget.This was a strange way to woo voters.
News & Media
There is talk of a small executive body under the aegis of the king.
News & Media
He had gone there, under the aegis of Jordan's main intelligence agency, to meet a high-level CIA delegation that expected him to provide information on al-Qaeda fugitives.
News & Media
Under the terms of the peace agreement, negotiated between the Maoists and their political opponents under India's aegis, some of the 23,000-odd corralled must be recruited into the army.
News & Media
Under his aegis, the Treasury even took control of some matters that the bank had previously handled, such as management of public debt and European Union policy.As the Treasury's star has waxed, so the Bank of Italy's has waned.
News & Media
Some Malians want troops under the aegis of the Economic Community of West African States (ECOWAS) to come in.
News & Media
A deal signed last year under the Saudi aegis between quarrelling Somali factions looked hopeful too, but failed to make the country governable.
News & Media
On August 12th businessmen and pro-government unions, under the aegis of the labour ministry, met to discuss the matter.
News & Media
Human-verified similar examples from authoritative sources
Similar Expressions
1 human-written examples
The media model has become "demand-led versus supply-led", says Nigel Morris at Dentsu-Aegis, an advertising agency.
News & Media
Expert writing Tips
Best practice
Use "aegis" to denote formal protection, sponsorship, or endorsement, especially when referring to organizations or institutions. For example, "The project was conducted under the aegis of the university."
Common error
Avoid using "aegis" in informal contexts. It's a formal term, and using it casually can sound pretentious. Simpler words like "protection" or "support" are often more appropriate in everyday conversation.
Source & Trust
88%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The term "aegis" primarily functions as a noun, often used in the prepositional phrase "under the aegis of". It signifies protection, sponsorship, or endorsement, typically provided by an organization or institution. Ludwig examples show usage in diverse contexts, reinforcing its role in denoting formal backing.
Frequent in
News & Media
56%
Formal & Business
22%
Science
22%
Less common in
Encyclopedias
0%
Wiki
0%
Reference
0%
Ludwig's WRAP-UP
In summary, "aegis" is a grammatically correct noun primarily used in the phrase "under the aegis of" to denote formal protection, sponsorship, or endorsement. As Ludwig AI confirms, it's a usable word in written English, frequently appearing in news and media, formal business, and scientific contexts. While powerful for establishing authority and legitimacy, it's best reserved for formal settings to avoid sounding pretentious. For alternatives, consider phrases like "under the protection of" or "under the auspices of", depending on the nuance you want to convey.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
under the protection of
This alternative directly replaces "aegis" with a more explicit phrase indicating protection.
under the auspices of
Replaces "aegis" with a synonym indicating guidance and support, often in a formal context.
with the backing of
Focuses on the support aspect of "aegis", implying endorsement and resources.
under the umbrella of
Uses a metaphorical phrase to convey the idea of comprehensive protection or coverage.
with the support of
Similar to "with the backing of" but emphasizes general support rather than specific endorsement.
under the shield of
Emphasizes the defensive and protective aspect of "aegis", using a more visual metaphor.
with the patronage of
Highlights the role of a patron in providing support and guidance.
under the guardianship of
Indicates a responsible and protective oversight.
with the sponsorship of
Focuses on the formal endorsement and financial support provided.
under the wing of
Uses a metaphorical phrase to indicate protective care and guidance, often from a more experienced entity.
FAQs
How do you use "aegis" in a sentence?
You typically use "aegis" in the phrase "under the aegis of" to indicate protection, sponsorship, or guidance. For example, "The conference was held under the aegis of the United Nations".
What's a synonym for "aegis"?
Synonyms for "aegis" include "protection", "auspices", "sponsorship", and "patronage". The best choice depends on the specific context.
Is it better to say "under the aegis of" or "with the support of"?
"Under the aegis of" implies a more formal and institutional framework of protection or sponsorship. "With the support of" is more general and can refer to any form of assistance. The better choice depends on the level of formality and the specific relationship you want to convey.
What does it mean when something is "under the aegis of" an organization?
When something is "under the aegis of" an organization, it means that the organization is providing "protection", "guidance", or "sponsorship" for that thing. It suggests a formal and structured relationship.
Editing plus AI, all in one place.
Stop switching between tools. Your AI writing partner for everything—polishing proposals, crafting emails, finding the right tone.
Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Source & Trust
88%
Authority and reliability
4.5/5
Expert rating
Real-world application tested