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
alter by
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "alter by" is correct and usable in written English.
It can be used when discussing changes made to something, specifying the means or method of alteration. Example: "The final design will alter by incorporating feedback from the client."
✓ Grammatically correct
Science
News & Media
Academia
Alternative expressions(20)
hinge on
amend by
diverse depending on
vary according to
affect depending on
dismiss by
differentiated by
prices are subject to change based on
price is variable and depends on
revise with
are distinguished by
fluctuate by
shift in accordance with
deviate by
adjusting by
be contingent upon
vary depending on
affect by
shift through
the price is affected by
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
23 human-written examples
If I pressed further, this or that element might alter by another degree or two.
News & Media
Besides, the obtained HOMO-LUMO gap and electrophilicity values for these structures alter by ozone addition.
Science
And the third boy whispered, "Thank you," but his mouth barely fluttered, so that he did not alter by more than a lip's movement his posture of attention.
News & Media
Carroll's mooted return looks a non-starter – (although Ashley's ability to hold his nerve in a game of brinkmanship with Liverpool suggests that could yet alter by 1 September) – and there are those who feel that may be no bad thing.
News & Media
On that occasion I authorized Mr. Dulles to state that, given a solution of the other related problems, I would recommend that the United States join in formal treaty engagements to prevent or thwart any effort by either side to alter by force the boundaries between Israel and its Arab neighbors.
Academia
But I want to, right now, set aside what is, I think a legitimate ground for challenging some of what Aristotle's saying, and focus instead on what I think is true about what he goes on to remark, which is, that it is impossible to alter by argument what has long been absorbed as the result of one's habits.
Academia
Human-verified similar examples from authoritative sources
Similar Expressions
37 human-written examples
The company's business is extensive and complex and considerations of convenience may have suggested delegation to directors of authority to make and alter by-laws.
Academia
St. N.J. 1910, p. 1606, § 11), provides: 'The power to make and alter by-laws shall be in the stockholders, but any corporation may, in the certificate of incorporation, confer that power upon the directors; by-laws made by the directors under power so conferred may be altered or repealed by the stockholders.' The charter empowers the directors to make and alter by-laws.
Academia
The Prudential Committee shall have all the powers of the Corporation except the power to award degrees, the power to alter By-Laws, and the power to appoint Permanent Officers (as defined in By-Law 35 hereof) except in an emergency and with the written consent of a majority of the Corporation or to fix the salary of such officials except in the form of special arrangements for a single year.
Academia
"It can be altered by neglect.
News & Media
Patrick Cariou photograph, as altered by Richard Prince.
News & Media
Expert writing Tips
Best practice
When using "alter by", ensure that the method or cause of the alteration is clearly stated to provide context and clarity. For example: 'The results may "alter by" adding more noise to the signal.'
Common error
Avoid using "alter by" without specifying the agent or method of alteration. Saying 'The data may alter' lacks clarity; instead, specify how the data might change: 'The data may "alter by" incorporating new variables'.
Source & Trust
86%
Authority and reliability
3.8/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "alter by" functions as a verb phrase indicating a process of modification or change caused by a specific action or influence. Ludwig examples show usage in academic and scientific contexts.
Frequent in
Science
50%
News & Media
25%
Academia
25%
Less common in
Encyclopedias
0%
Formal & Business
0%
Social Media
0%
Ludwig's WRAP-UP
In summary, "alter by" is a grammatically correct verb phrase used to indicate a process of modification or change caused by a specific action or influence. Ludwig AI confirms its correctness and provides various examples, predominantly from scientific and academic sources. While not exceedingly common, it is a useful phrase for describing causal relationships in a precise and formal manner. When employing "alter by", clarity is key; ensure the method or cause of alteration is explicitly stated. Alternatives such as "modify through" or "change via" can offer similar meanings in different contexts.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
modify through
Focuses on the method used for modification.
change via
Highlights the means by which a change is enacted.
transform using
Emphasizes a more significant change or conversion.
adjust by means of
Implies a precise adjustment made through specific tools or processes.
revise with
Suggests a careful review and modification process.
shift through
Describes a gradual change influenced by something.
adapt via
Implies a change to suit new conditions.
influence through
Highlights the impact on something that produces change.
convert by
Focuses on changing something into a different form.
reshape through
Suggests a significant alteration of form or structure.
FAQs
How can I use "alter by" in a sentence?
Use "alter by" to indicate a change caused by a specific action or influence. For example, 'The plan may "alter by" including feedback from stakeholders'.
What's a good substitute for "alter by"?
Depending on the context, you might use alternatives like "modify through", "change via", or "transform using".
Is it more formal to say "alter by" or "change by"?
"Alter by" generally carries a slightly more formal tone than "change by", making it suitable for academic or professional writing.
How does "alter by" differ from "altered by"?
"Alter by" is an active construction indicating a potential change, while "altered by" is a passive construction describing a completed change. For instance, 'The results may "alter by" adding more data' versus 'The results were "altered by" new findings'.
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
86%
Authority and reliability
3.8/5
Expert rating
Real-world application tested