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Justyna Jupowicz-Kozak

CEO of Professional Science Editing for Scientists @ prosciediting.com

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Not effective

Grammar usage guide and real-world examples

USAGE SUMMARY

The phrase "Not effective" is correct and usable in written English.
You can use it to describe something that does not achieve the desired result or outcome. Example: "The new marketing strategy was not effective in increasing sales as anticipated."

✓ Grammatically correct

News & Media

Science

Formal & Business

Human-verified examples from authoritative sources

Exact Expressions

56 human-written examples

"DDT was not effective".

News & Media

The New York Times

They were not effective".

News & Media

The New York Times

"They're not effective solutions.

News & Media

The New York Times

It was not effective.

News & Media

The New Yorker

Anthony was not effective in overtime.

"You're not effective if you alienate people".

News & Media

The New York Times

Her campaign was just not effective.

News & Media

The New York Times

This top-down approach is not effective.

News & Media

The New York Times

It just makes them not effective.

News & Media

The New York Times

Bowdlerized versons of tales are not effective.

News & Media

The New Yorker

Antibiotics are not effective against the flu.

News & Media

The Guardian
Show more...

Expert writing Tips

Best practice

Use "not effective" when you want to clearly state that something isn't producing the intended results. Consider using synonyms like "ineffective" or "unsuccessful" for brevity, depending on context.

Common error

Avoid using double negatives such as "not not effective", which can confuse your readers. Instead, rephrase to use a positive statement if the intention is to convey effectiveness.

Antonio Rotolo, PhD - Digital Humanist | Computational Linguist | CEO @Ludwig.guru

Antonio Rotolo, PhD

Digital Humanist | Computational Linguist | CEO @Ludwig.guru

Source & Trust

84%

Authority and reliability

4.5/5

Expert rating

Real-world application tested

Linguistic Context

The phrase "not effective" functions as an adjective phrase. As Ludwig AI confirms, it describes something that lacks the ability to produce a desired result or outcome. It modifies nouns, indicating a deficiency in achieving a specific purpose, similar to examples shown in Ludwig.

Expression frequency: Very common

Frequent in

News & Media

45%

Science

35%

Formal & Business

10%

Less common in

Wiki

3%

Social Media

2%

Reference

5%

Ludwig's WRAP-UP

In summary, the phrase "not effective" is a grammatically sound and frequently used expression to describe something failing to produce the intended outcome. Ludwig AI confirms its correctness and widespread applicability. It appears most commonly in news, scientific, and business contexts. While synonyms like "ineffective" offer conciseness, "not effective" provides directness. When writing, avoid double negatives to maintain clarity.

FAQs

What does "not effective" mean?

The phrase "not effective" means something is not producing the desired or intended result. It indicates a lack of efficacy or success in achieving a particular goal.

How can I use "not effective" in a sentence?

You can use "not effective" to describe methods, strategies, treatments or anything that fails to achieve its purpose. For example: "The new policy was "not effective" in reducing crime rates."

What are some alternatives to saying "not effective"?

Depending on the context, you can use alternatives like "ineffective", "unsuccessful", "futile", or "fruitless". These words all suggest a lack of positive outcome or result.

When is it better to use "ineffective" instead of "not effective"?

Using "ineffective" can often be more concise and direct, particularly in formal writing. However, "not effective" may be preferred when you want to emphasize the lack of effectiveness more explicitly, or when it forms part of a longer phrase or clause.

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Source & Trust

84%

Authority and reliability

4.5/5

Expert rating

Real-world application tested

Most frequent sentences: