not as efficient

USAGE SUMMARY

The phrase "not as efficient" is correct and usable in written English.
You can use it to compare the efficiency of two or more methods, processes, or systems, indicating that one is less efficient than the other. Example: "While the new software has some advantages, it is not as efficient as the previous version in processing data."

✓ Grammatically correct

Science

News & Media

Formal & Business

Human-verified examples from authoritative sources

Exact Expressions

59 human-written examples

Further deletions of the construct that could increase transduction efficiency were not as efficient in its inhibitory function as N89.

BioMed Research International

I agree that Iran is not as efficient as Germany.

The New York Times

The Germans are not as efficient as is popularly believed.

The New Yorker

But they are not as efficient, powerful, creative or balanced.

The New York Times - Sports

To regulate is not as efficient at this point as informing".

The New York Times

"Pillsbury is not as efficient," said Jaine Mehring, an analyst for Salomon Smith Barney.

The New York Times

"Health care is also expensive because our system is not as efficient as it could be.

The New York Times

Wireless charging is not as efficient as plugging directly into the car.

The New York Times

Although not as efficient as the rectangular panel, it provided a steady, all-around light.

Encyclopedia Britannica

"The reality is that we are not as efficient in managing our system as [other states] are," Hames said.

The Guardian

On the off chance that you have a flat, you drive on a tire that is not as efficient".

The New York Times

Expert writing Tips

Best practice

When comparing the efficiency of two systems, be specific about what makes one "not as efficient" as the other. Provide context and measurable differences to support your claim.

Common error

Avoid using "not as efficient" without specifying the context or providing supporting evidence. Saying something is "not as efficient" without explaining why weakens your argument.

Linguistic Context

The phrase "not as efficient" functions as a comparative adjective phrase, used to describe something that possesses a lower degree of efficiency relative to something else. As confirmed by Ludwig AI, it correctly follows standard grammar rules.

Expression frequency: Very common

Frequent in

Science

33%

News & Media

57%

Formal & Business

10%

Less common in

Encyclopedias

0%

Wiki

0%

Reference

0%

Ludwig's WRAP-UP

In summary, "not as efficient" is a grammatically sound and widely used phrase for comparing the efficiency of two or more things. Ludwig AI confirms its correctness. It serves to point out deficiencies or relative weaknesses and is commonly found in news, science, and formal business contexts. For more formal settings, alternatives like "suboptimal" may be suitable. When using this phrase, ensure you provide specific context and supporting evidence to avoid overgeneralizations.

More alternative expressions

Phrases that express similar concepts, ordered by semantic similarity:

less efficient

Direct synonym, simpler phrasing.

not quite as effective

Focuses on the effectiveness aspect of efficiency.

suboptimal

Single-word replacement, more formal.

not as productive

Highlights the output aspect of efficiency.

lacking efficiency

Emphasizes the absence of full efficiency.

not up to par

More informal, implies a standard is not met.

less streamlined

Focuses on the process being less efficient.

not fully optimized

Highlights the lack of full optimization.

resource-intensive

Describes inefficiency in terms of resource usage.

uneconomical

Highlights the cost aspect of inefficiency.

FAQs

How can I use "not as efficient" in a sentence?

Use "not as efficient" to compare two methods or systems, indicating that one performs with less productivity or more waste than the other. For instance, "Manual data entry is "not as efficient" as automated processing".

What's a more formal alternative to "not as efficient"?

For a more formal tone, consider using "suboptimal" or "less efficacious". These options offer a similar meaning while maintaining a professional register.

Is it always negative to say something is "not as efficient"?

While often used to point out a disadvantage, "not as efficient" can also be neutral when simply comparing different approaches without judgment. The connotation depends on the context.

Which is correct, "not as efficient as" or "not so efficient as"?

"Not as efficient as" is generally preferred in modern English. "Not so efficient as" is grammatically correct but sounds more archaic.