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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
he sustains that
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "he sustains that" is not correct in standard written English.
It is likely intended to convey that someone maintains or supports a particular argument or belief. Example: "In his essay, he sustains that climate change is primarily caused by human activity."
⚠ May contain grammatical issues
News & Media
Science
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
3 human-written examples
Instead of resolving the musical tensions of this chord, as any previous composer would have done, he keeps the music in a heightened state of limbo by continually avoiding answering the harmonic questions it asks, and he sustains that sense of febrile ambiguity throughout all three acts of the drama right until the very end of the piece.
News & Media
But he sustains that gee-whiz note of surprise throughout the book, even when wondering whether a show about the White House staff could really find a television audience.
News & Media
Thus, he sustains that "all the special features of this industry, in fact, stem from the prevalence of uncertainty".
Science
Human-verified similar examples from authoritative sources
Similar Expressions
54 human-written examples
He sustained that zest even with an aching right heel that has been keeping him up at night.
News & Media
A later, slightly anticlimatic scene shows how he sustained that scar to his head – by falling, a bit pissed, off the back of a lorry.
News & Media
Beckett made everybody's music sound better, without showing the slightest desire to draw attention to himself, and he sustained that balance all his life.
News & Media
"If we look back in three or four years' time and he's performing like he is now... He's performing like Messi and Ronaldo do every week at the moment, but can he sustain that?
News & Media
Therefore, Humphrey today, even though he sustained that painful impulses do originate peripherally from cephalic vessels and that sumatriptan acts almost entirely peripherally [19], moves his attention towards the brain! .
Therefore, Humphrey today, even though he sustained that painful impulses do originate peripherally from cephalic vessels and that sumatriptan acts almost entirely peripherally [19], moves his attention towards the brain!
He creates and sustains that illusion more elegantly than most as he works to make the person in the uniform more visible.
News & Media
It is a wonder that he can sustain that sort of equipoise.
News & Media
Expert writing Tips
Best practice
When aiming for clarity and grammatical correctness, replace the phrase "he sustains that" with alternatives like "he maintains that" or "he asserts that" to ensure smoother and more accurate communication.
Common error
Avoid using "sustains" when you mean "maintains" or "asserts" in the context of stating an opinion or belief. "Sustain" typically implies supporting or upholding something over time, not simply expressing it.
Source & Trust
86%
Authority and reliability
2.8/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "he sustains that" attempts to function as a declarative statement, indicating someone's ongoing support for an idea or argument. However, according to Ludwig AI, this construction does not follow standard English grammar. Using "maintains" or "asserts" is preferable.
Frequent in
News & Media
66%
Science
33%
Formal & Business
0%
Less common in
Encyclopedias
0%
Wiki
0%
Reference
0%
Ludwig's WRAP-UP
The phrase "he sustains that" presents a grammatical challenge. While intended to convey that someone consistently supports or believes in something, it's not considered standard English. Ludwig AI flags it as incorrect, advising alternatives like "he maintains that" or "he asserts that". Though examples exist across News & Media and Science, the phrase's grammatical dubiousness and rareness suggest it's best avoided in formal writing. Opting for grammatically sound alternatives ensures clarity and strengthens communication.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
he maintains that
Replaces "sustains" with "maintains", suggesting a continued assertion or defense of a belief.
he insists that
Substitutes "sustains" with "insists", emphasizing a firm and unwavering declaration.
he asserts that
Uses "asserts" in place of "sustains", focusing on a confident and forceful statement.
he argues that
Replaces "sustains" with "argues", highlighting the presentation of reasons or evidence for a belief.
he contends that
Employs "contends" instead of "sustains", indicating a position taken in a debate or discussion.
he upholds that
Substitutes "sustains" with "upholds", suggesting support or defense, often in the face of opposition.
he defends that
Uses "defends" to replace "sustains", indicating a more active protection of an idea against criticism.
he advocates that
Replaces "sustains" with "advocates", emphasizing support for a cause or policy.
he champions that
Substitutes "sustains" with "champions", highlighting enthusiastic and vigorous support.
he stands by that
Uses "stands by" instead of "sustains", conveying unwavering support or loyalty.
FAQs
What is the difference between "he sustains that" and "he maintains that"?
"He sustains that" is generally considered grammatically incorrect. Instead, use "he maintains that", which means he continues to believe or assert something.
Is it correct to say "he sustains that"?
No, the phrase "he sustains that" is not considered standard English. More appropriate alternatives include "he asserts that" or "he maintains that".
What are some alternatives to the incorrect phrase "he sustains that"?
Better alternatives to "he sustains that" are "he argues that", "he insists that", or "he contends that".
How can I use "he maintains that" in a sentence?
Use "he maintains that" to express that someone firmly believes or consistently asserts something. For example, "He maintains that the Earth is flat, despite scientific evidence to the contrary."
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Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Source & Trust
86%
Authority and reliability
2.8/5
Expert rating
Real-world application tested