less than efficacious

USAGE SUMMARY

The phrase "less than efficacious" is correct and usable in written English.
It can be used to describe something that is not very effective or does not produce the desired results. Example: "The new medication proved to be less than efficacious in treating the condition, leading to a search for alternative treatments."

✓ Grammatically correct

Science

News & Media

Human-verified examples from authoritative sources

Exact Expressions

2 human-written examples

Those assurances were less than efficacious in California, as Asian enrollment surpassed Hispanic enrollment, even though the Hispanic population is three times larger.

Huffington Post

Experience has shown us that stigma is resilient, being difficult to eradicate; anti-stigma initiatives are often less than efficacious, especially regarding stigma toward schizophrenia [ 13- 15].

BMC Psychiatry

Human-verified similar examples from authoritative sources

Similar Expressions

58 human-written examples

Additionally, synergy may allow two drugs, both less than 50% efficacious, to be combined to achieve a very high efficacy [ 31].

BioMed Research International

Simulation results suggest that when vaccination begins near the peak of the epidemic, a 50% efficacious vaccine may reduce the overall attack rate by only 5% less than a 100% efficacious vaccine.

BMC Public Health

Exenatide ER has been shown to be more effective than exenatide twice daily and slightly less efficacious than liraglutide.

Diabetes, Metabolic Syndrome and Obesity: Targets and Therapy

Epirubicin tended to be slightly less efficacious than doxorubicin (ORR, 18% vs 25%; P =.33), but produced less hematological toxicity and less nausea and vomiting.

Cancer

Vaccine efficacy of AdPvs25 was slightly higher than to a recombinant Pvs25 protein mixed with aluminum hydroxide, but less efficacious than the protein emulsified with incomplete Freund's adjuvant.

Vaccine

Three hours after antisepsis, the bacterial reduction on the gloved hand was only significantly less efficacious than that of the reference when 75% ethanol was used.

Journal of Hospital Infection

Although previous studies have found automated percutaneous discectomy and epidural percutaneous discectomy to be less efficacious than conventional discectomy, these percutaneous procedures may be effective and cost-effective as a first surgical treatment for herniated lumbar disc.

Journal of Clinical Neuroscience

Assuming that crystalloid solutions possess glycocalyx releasing properties per se, and given the fact that crystalloids were less efficacious than the colloids to restore blood pressure, we cannot exclude that the amount of heparan sulphate and syndecan-1 would have been higher in the RA group if resuscitation had been targeted to obtain similar blood pressures in all groups.

Intensive Care Medicine Experimental

In the case of off-label medications, the assumption of equal efficacy with rectal diazepam was a conservative estimate as clinical experts in several countries suggested that other off-label medications, such as lorazepam tablets administered by the buccal route, were less efficacious than rectal diazepam.

Health Economics Review

Expert writing Tips

Best practice

When using "less than efficacious", consider the audience. In formal or scientific writing, it's appropriate. In more casual contexts, simpler alternatives like "not very effective" might be better received.

Common error

Avoid using "less than efficacious" in everyday conversation or informal writing. It can sound pretentious. Choose simpler alternatives like "not effective" or "ineffective" for greater clarity.

Linguistic Context

The phrase "less than efficacious" functions as an adjective phrase, modifying a noun to describe its effectiveness. Ludwig AI confirms its correctness and usability in written English. It serves to qualify or diminish the perceived effectiveness of something.

Expression frequency: Rare

Frequent in

Science

75%

News & Media

25%

Less common in

Formal & Business

0%

Encyclopedias

0%

Wiki

0%

Ludwig's WRAP-UP

The phrase "less than efficacious" serves as a sophisticated way to describe something that isn't quite hitting the mark in terms of effectiveness. While grammatically sound, as Ludwig AI confirms, it's a term best reserved for formal and scientific writing due to its somewhat elevated tone. Simpler alternatives like "not very effective" or "somewhat ineffective" often serve better in casual contexts. Though usage is rare, the phrase finds its niche primarily in scientific and news domains. Be mindful of your audience and the overall tone you wish to convey when employing this phrase, opting for clarity and directness where appropriate.

More alternative expressions

Phrases that express similar concepts, ordered by semantic similarity:

somewhat ineffective

Replaces the more formal "efficacious" with a simpler term, indicating a slight lack of effectiveness.

not very effective

Uses common vocabulary to convey a moderate lack of effectiveness.

partially ineffectual

Emphasizes the partial failure to produce the desired effect.

suboptimal in effect

Highlights that the results are below the ideal or expected level.

not entirely successful

Focuses on the lack of complete success in achieving the intended outcome.

deficient in performance

Indicates that the performance is lacking or inadequate.

lacking full potency

Suggests a reduced strength or capacity to produce the desired effect.

limited in impact

Implies that the effect or influence is restricted or constrained.

not as potent as hoped

Expresses a disappointment in the strength or effectiveness compared to expectations.

falling short of expectations

Highlights the failure to meet the anticipated level of effectiveness or success.

FAQs

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

Use "less than efficacious" to describe something that is not very effective. For example: "The new treatment proved to be "less than efficacious", so we need to explore other options."

What are some alternatives to "less than efficacious"?

You can use alternatives like "not very effective", "somewhat ineffective", or simply "ineffective" depending on the desired level of formality.

Is it always appropriate to use "less than efficacious" in formal writing?

While grammatically correct, "less than efficacious" can sometimes sound overly formal. Consider your audience and the overall tone of your writing. Simpler alternatives might be clearer and more impactful.

What's the difference between "less than efficacious" and "ineffective"?

"Less than efficacious" implies a degree of ineffectiveness, while "ineffective" suggests a complete lack of effectiveness. The former is a softer, more nuanced way to express that something is not working as well as desired.