was proof that

USAGE SUMMARY

The phrase "was proof that" is correct and usable in written English.
It can be used to indicate that something serves as evidence or confirmation of a particular fact or situation. Example: "The discovery of the ancient artifact was proof that the civilization had advanced technology."

✓ Grammatically correct

News & Media

Academia

Science

Human-verified examples from authoritative sources

Exact Expressions

60 human-written examples

This was proof that I was military!

The New York Times

Here was proof that Mexico had arrived.

The Guardian - Sport

It was proof that she is good at her job.

Princeton University

(Their relationship was proof that misery loves company).

The New York Times - Sports

It was proof that at least some were seeking.

The New York Times - Sports

Here, I thought proudly, was proof that welfare reform works.

The New York Times

"This [100th cap] was proof that the dream is real.

The Guardian - Sport

Today was proof that she's handling it like a champion".

The New York Times - Sports

It was proof that tissue engineering could be applied in clinical practice.

Nature

David Willetts, the universities minister, said the report was proof that social mobility had stalled.

The Guardian

Drogba's goal was proof that Drogba invariably crowns a Wembley appearance with a significant moment.

The New York Times - Sports

Expert writing Tips

Best practice

Use "was proof that" to clearly and directly indicate that a piece of evidence supports a particular conclusion. Ensure the evidence logically connects to the claim being made.

Common error

Avoid using "was proof that" when the evidence is circumstantial or open to interpretation. Ensure the evidence irrefutably supports the claim; otherwise, use softer language like "suggested that" or "indicated that".

Linguistic Context

The phrase "was proof that" functions as a declarative expression, asserting that something definitively demonstrates the truth of a statement. According to Ludwig AI, the structure is grammatically correct and widely used. It acts as a linking phrase connecting evidence to a conclusion.

Expression frequency: Very common

Frequent in

News & Media

55%

Academia

25%

Science

10%

Less common in

Formal & Business

5%

Encyclopedias

3%

Wiki

2%

Ludwig's WRAP-UP

In summary, the phrase "was proof that" is a grammatically correct and frequently used expression to indicate definitive evidence supporting a claim. As confirmed by Ludwig AI, it is widely used across various contexts, particularly in news and media, academic writing, and scientific publications. While versatile, it's crucial to ensure the evidence genuinely and irrefutably supports the assertion. When a more nuanced or less conclusive connection is intended, consider alternatives like "was indicative of" or "served as confirmation that". Employing "was proof that" effectively strengthens arguments and conveys certainty when used appropriately.

More alternative expressions

Phrases that express similar concepts, ordered by semantic similarity:

was evidence that

Replaces "proof" with "evidence", a direct synonym indicating factual support for a claim.

was indicative of

Shifts from direct proof to suggesting something as a sign or indication.

demonstrated that

Emphasizes the act of showing or proving something through action or example.

confirmed that

Highlights that something was previously uncertain but is now established as true.

served as confirmation that

Adds emphasis by specifying the role as providing confirmation.

testified to the fact that

More formal, suggesting a declaration or strong evidence.

bore witness to

Implies a direct observation or experience that supports a claim.

substantiated the claim that

Formally supports the validity of an assertion.

validated the idea that

Focuses on confirming the soundness or correctness of an idea.

established the truth that

Highlights the setting up or proving of something as factual.

FAQs

How can I use "was proof that" in a sentence?

Use "was proof that" to demonstrate a direct and conclusive link between evidence and a conclusion. For example, "The test results were proof that the new medication was effective".

What's a more formal alternative to "was proof that"?

For a more formal tone, consider using phrases like "served as confirmation that" or "substantiated the claim that".

Is it always appropriate to use "was proof that"?

No, only use "was proof that" when the evidence definitively supports the conclusion. If the evidence is less conclusive, consider alternatives like "was indicative of" or "suggested that".

What's the difference between "was proof that" and "was evidence that"?

While similar, "was evidence that" is a broader term. "Was proof that" implies a higher degree of certainty and conclusiveness than "was evidence that".