Used and loved by millions
Since I tried Ludwig back in 2017, I have been constantly using it in both editing and translation. Ever since, I suggest it to my translators at ProSciEditing.

Justyna Jupowicz-Kozak
CEO of Professional Science Editing for Scientists @ prosciediting.com
was deficient in
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "was deficient in" is correct and usable in written English.
It can be used to describe a lack or insufficiency in something, often in a formal or academic context. Example: "The report indicated that the project was deficient in necessary resources, which hindered its progress."
✓ Grammatically correct
Science
News & Media
Formal & Business
Alternative expressions(7)
Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Human-verified examples from authoritative sources
Exact Expressions
60 human-written examples
However, Ash2L/RbBP5 was able to partially rescue the SAM binding deficiency of the MLL1SET mutant H3907A, which was deficient in SAM binding by itself (Fig. 3D) [3].
Science
There have been moves towards a better process now, but it was deficient in 2005, 2006 and 2007, Dannatt says.
News & Media
A second advisory firm, Glass Lewis, also advised shareholders to rebel against JP Morgan's remuneration policy, which it said was "deficient in aligning pay with performance".
News & Media
"If a prospective donor was deficient in some way, usually intellectually, the family power structure tended to focus on his or her presumed expendability".
News & Media
The poet Thom Gunn, a friend of the author's, remarked that he'd worried Sacks was deficient in empathy until he became a clinician.
News & Media
It wasn't happy with the regulator, surprise surprise, saying its analysis was "deficient in a number of ways".
News & Media
But his surrogates argued Monday that he did have the economic knowledge to go with his experience in foreign policy and national security, and that Mr. Obama was deficient in all of those areas.
News & Media
U.S.T.A. officials tested alternative electronic line-calling systems for years, but every system they looked at until Hawk-Eye was deficient in some critical way, said Rich Kaufman, the U.S.T.A.'s director of officials and chief umpire for the Open.
News & Media
"And to be honest with you, the program last year was deficient in data collection because we never really initiated a whole program".
News & Media
As a freshman at LaGuardia, Angel Payero, 18, took the necessary assessment tests in August and discovered that he was deficient in reading, writing and math.
News & Media
The S.E.C.'s complaint was "deficient" in proving the second, Judge Fitzwater ruled, noting that Mr. Fauré never asked Mr. Cuban not to trade.
News & Media
Expert writing Tips
Best practice
When using the phrase "was deficient in", ensure that you clearly state what the subject was lacking and the consequences of that deficiency for clarity.
Common error
While grammatically correct, "was deficient in" can sound overly formal in casual conversation. Opt for simpler alternatives like "lacked" or "didn't have enough" for a more natural tone.
Source & Trust
83%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "was deficient in" functions as an adjectival phrase, modifying a noun to indicate a lack or inadequacy. Ludwig AI confirms its correct usage and prevalence in various contexts.
Frequent in
Science
58%
News & Media
36%
Encyclopedias
2%
Less common in
Wiki
2%
Formal & Business
0%
Social Media
0%
Ludwig's WRAP-UP
In summary, the phrase "was deficient in" is a grammatically sound and commonly used phrase to describe a lack or inadequacy. According to Ludwig AI, its usage is correct and applicable across various contexts, although it tends to lean towards formal and scientific writing. The phrase functions as an adjectival modifier, typically indicating a shortcoming and is frequently found in scientific and news sources. While "was deficient in" is appropriate in many cases, remember that alternatives like "lacked" or "was lacking in" can often provide a more concise and natural-sounding option, especially in informal settings.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
lacked
This alternative is a more concise way of expressing deficiency, focusing on the absence of something.
was lacking in
This alternative is very similar in meaning, providing a slightly more emphatic way of stating a deficiency.
was short on
This alternative suggests a deficiency in quantity, implying that something is insufficient.
was inadequate in
This alternative highlights the insufficiency or unsuitability of something for a specific purpose.
was insufficient in
This alternative emphasizes that something is not enough or not adequate for a particular requirement.
was weak in
This alternative suggests a deficiency in strength or competence, often used in the context of skills or abilities.
was wanting in
This alternative is a slightly more formal way of saying that something is missing or deficient.
fell short in
This alternative indicates a failure to meet a required standard or expectation.
did not have enough
This alternative is a straightforward and simple way of expressing a lack of something.
was skimpy on
This alternative suggests that something was provided in a small or insufficient amount.
FAQs
What does it mean to say something "was deficient in" something else?
To say something "was deficient in" something else means that it lacked an adequate amount of that thing or that it had a shortage of it. It implies that the deficiency had a negative impact.
How can I use "was deficient in" in a sentence?
You can use "was deficient in" to describe a lack or inadequacy. For example: "The study found that the soil "was deficient in" essential nutrients, leading to poor crop growth."
What are some alternatives to "was deficient in"?
Some alternatives to "was deficient in" include "lacked", "was lacking in", or "was short on". The best choice depends on the specific context.
Is it better to say "was deficient in" or "lacked"?
Both "was deficient in" and "lacked" are grammatically correct, but "lacked" is often more concise and suitable for both formal and informal contexts. "Was deficient in" is often perceived as more formal.
Editing plus AI, all in one place.
Stop switching between tools. Your AI writing partner for everything—polishing proposals, crafting emails, finding the right tone.
Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Source & Trust
83%
Authority and reliability
4.5/5
Expert rating
Real-world application tested