less efficacious

USAGE SUMMARY

The phrase "less efficacious" is correct and usable in written English.
It can be used in contexts where you are comparing the effectiveness of two or more things, indicating that one is not as effective as the other. Example: "The new treatment proved to be less efficacious than the previous one in clinical trials."

✓ Grammatically correct

Science

Academia

News & Media

Human-verified examples from authoritative sources

Exact Expressions

60 human-written examples

Differences in efficacy were syndromal, i.e. more or less efficacious in neuralgias than in persistent facial pain.  .

The Journal of Headache and Pain

This might be the reason why frovatriptan, which is normally less efficacious in the first 2 hours after drug intake, was of particular efficacy in this study.

The Journal of Headache and Pain

On all three cell lines tested, GDEPT with TK/GCV made CRAd treatment less efficacious.

Stanford University

Although 924-PAC appeared less efficacious than 924-RAC, these results were not observed with 7B2-PAC and 7B2-RAC.

Nature

Its widespread use was highly successful in reducing malaria mortality but less efficacious in reducing the number of cases.

Nature

But is the American way more or less efficacious than comparable democracies in Asia, Latin America, or Europe?

Stanford University

He said it was "less efficacious for the real economy than most people suppose".

The New York Times

Platelet transfusions given to patients with fever or systemic inflammation are less efficacious.

Transfusion and Apheresis Science

Taken together, these studies suggest that cytisine and varenicline induce a similar increase in dopamine levels, but both these drugs are less efficacious than nicotine.

Nature

A parallel 2-stage design was employed so that a less efficacious arm could be terminated early.

Biology of Blood and Marrow Transplantation

Colonoscopy may be less efficacious in reducing colorectal cancer mortality in the proximal compared with the distal colon.

Gastrointestinal Endoscopy

Expert writing Tips

Best practice

When comparing the effectiveness of two treatments or strategies, use "less efficacious" to clearly indicate which one yields a smaller or weaker effect. For instance, "The new drug was found to be "less efficacious" than the standard treatment in reducing symptoms."

Common error

While "less efficacious" is technically correct, it can sound overly formal or stilted in everyday conversation. Opt for simpler alternatives like "less effective" or "not as effective" in informal settings to maintain a natural tone.

Linguistic Context

The phrase "less efficacious" primarily functions as an adjective phrase used to modify a noun, indicating that something possesses a reduced level of effectiveness or potency. Ludwig's examples showcase its use in comparing the effectiveness of treatments, interventions, or strategies.

Expression frequency: Very common

Frequent in

Science

73%

Academia

19%

News & Media

8%

Less common in

Formal & Business

0%

Encyclopedias

0%

Wiki

0%

Ludwig's WRAP-UP

In summary, the phrase "less efficacious" is a grammatically correct and frequently used expression that indicates a reduced level of effectiveness. Ludwig AI confirms its validity and applicability, particularly in scientific, academic, and medical contexts. While "less efficacious" is widely accepted, simpler alternatives like "less effective" are preferable in informal settings. Key considerations include using "less efficacious" to compare the potency of treatments or strategies and avoiding its overuse in casual conversation. With a strong presence in scientific literature, understanding its usage nuances can greatly improve the precision of formal writing.

More alternative expressions

Phrases that express similar concepts, ordered by semantic similarity:

less effective

This alternative directly replaces "efficacious" with "effective", maintaining the same core meaning of reduced impact.

not as efficacious

This phrase uses a negative construction to express the same idea of reduced efficacy.

less efficient

This alternative focuses on the reduced efficiency of a process or method, implying it takes more resources or time to achieve the same result.

less potent

This term suggests a weaker strength or ability to produce a desired effect, often used in scientific or medical contexts.

less successful

This emphasizes the reduced achievement of desired outcomes or goals.

less beneficial

This term indicates a reduced positive impact or advantage.

less productive

This highlights the reduced output or results achieved, often in a work-related context.

less advantageous

Similar to "less beneficial", this phrase highlights a reduced favorable position or circumstance.

less helpful

Focuses on the diminished ability to provide assistance or support.

less useful

This indicates a reduced level of practical application or value.

FAQs

What does "less efficacious" mean?

"Less efficacious" means not as effective or successful in producing a desired result or effect. It implies a lower degree of potency or ability to achieve the intended outcome.

How can I use "less efficacious" in a sentence?

You can use "less efficacious" to compare the effectiveness of two things. For example, "The generic drug proved to be "less efficacious than" the brand-name version in clinical trials."

Which is correct: "less efficacious" or "less effective"?

Both "less efficacious" and "less effective" are correct, but "less efficacious" is more formal and often used in scientific or medical contexts, while "less effective" is more commonly used in general conversation.

What are some alternatives to saying "less efficacious"?

Some alternatives to "less efficacious" include "less effective", "less efficient", "not as effective", or "less potent", depending on the specific context.