could have failed

USAGE SUMMARY

The phrase "could have failed" is correct and usable in written English.
It can be used to express a possibility or hypothetical situation in the past where failure was an option. Example: "The project was risky, and it could have failed if we hadn't taken the necessary precautions."

✓ Grammatically correct

News & Media

Science

Formal & Business

Human-verified examples from authoritative sources

Exact Expressions

58 human-written examples

A scheme like theirs could have failed easily.

The New Yorker

The Winter's Tale could have failed, and failed badly.

The Guardian

No witnesses could have failed to draw the inference.

The Guardian - Sport

So Boeing is identifying ways that the batteries could have failed.

The New York Times

I lay in bed wondering how the international community could have failed to halt the genocide.

The Guardian

It could have failed – as it nearly did over Cuba – and it was inconsistently applied.

The Guardian - Opinion

Others wondered how the city could have failed to recognize the family's desperate needs.

The New York Times

"This is a test that general relativity could have failed," he said.

The New York Times - Science

They also wondered how the system could have failed so completely.

The New York Times

Human-verified similar examples from authoritative sources

Similar Expressions

2 human-written examples

No fan of the series could have failed to acknowledge the level of expectation invested in the final Potter film.

The Guardian - Film

Your parents could have failed to meet, so that you were never born.

SEP

Expert writing Tips

Best practice

Use "could have failed" to express a past possibility where something did not succeed, highlighting the potential for a different outcome. For example, "The experiment was risky, and it "could have failed" if the variables weren't controlled."

Common error

Avoid using "could have failed" to describe current or future possibilities. It refers specifically to past events with potential negative outcomes. Instead, use "could fail" or "might fail" for present or future scenarios.

Linguistic Context

The phrase "could have failed" functions as a modal verb phrase expressing a retrospective possibility of failure. It indicates that something had the potential to not succeed in the past. Ludwig AI confirms its correct usage across various contexts.

Expression frequency: Very common

Frequent in

News & Media

57%

Science

29%

Formal & Business

14%

Less common in

Encyclopedias

0%

Wiki

0%

Reference

0%

Ludwig's WRAP-UP

In summary, the phrase "could have failed" is a grammatically sound and frequently used expression to denote a past possibility of failure. Ludwig AI confirms its correct usage. Its application spans various contexts, including news, science, and formal settings. While alternatives like "might have failed" or "may have failed" exist, the core meaning remains consistent. When using this phrase, ensure it accurately reflects a past scenario and avoid misusing it for present or future possibilities. By understanding its function and purpose, writers can effectively convey the potential risks and uncertainties of past events.

More alternative expressions

Phrases that express similar concepts, ordered by semantic similarity:

might have failed

Replaces "could" with "might", indicating a slightly lower probability of failure.

may have failed

Substitutes "could" with "may", suggesting a possibility of failure.

could have gone wrong

Focuses on the process leading to failure, rather than the state itself.

could have been unsuccessful

States directly that the possibility of lacking success existed.

could have collapsed

Implies a sudden and complete failure, often in a structural or systemic context.

could have fallen apart

Suggests a gradual disintegration leading to failure.

could have backfired

Indicates that an action intended to succeed resulted in a negative outcome.

could have miscarried

Emphasizes a plan or effort that did not achieve its intended result.

could have floundered

Highlights a struggle and lack of progress, potentially leading to failure.

could have been in vain

Focuses on the futility of the effort if failure had occurred.

FAQs

How can I use "could have failed" in a sentence?

"Could have failed" is used to describe a past event that had the potential to not succeed. For example, "The mission was dangerous, and it "could have failed" if not for the team's expertise."

What are some alternatives to "could have failed"?

You can use alternatives such as "might have failed", "may have failed", or "could have gone wrong" depending on the context.

Is it correct to say "could of failed" instead of "could have failed"?

No, "could of failed" is grammatically incorrect. The correct form is "could have failed", where "have" is an auxiliary verb. The contraction "could've" is also acceptable.

What's the difference between "could have failed" and "could fail"?

"Could have failed" refers to a past possibility that didn't succeed. "Could fail" refers to a present or future possibility of not succeeding. For example, "The business model "could have failed" in 2008" versus "This business model "could fail" in the current market."