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
rely in
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "rely in" is not correct in standard written English.
The correct expression is "rely on." Example: "I rely on my friends for support during tough times."
⚠ 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
59 human-written examples
He came to rely in particular on a Madame Delahaye.
News & Media
"We will rely in the first instance on test scores," Mr. Klein said.
News & Media
MR. KLOCK -- I think they did rely, in creating the remedy, on the Florida Constitution.
News & Media
The theater will have to rely in part on out-of-town audiences.
News & Media
Markets rely, in the old phrase, on ceteris paribus to work efficiently.
News & Media
All aquariums rely in varying degrees on admission fees, taxpayers, donations and grants.
News & Media
Both the Afghan and Pakistani Taliban rely in part on money from foreign donors.
News & Media
Many families in villages now rely in part on remittances from relatives in town.
News & Media
Unusually, those charges rely, in part, on evidence from Ms. Yates's own work.
News & Media
They will rely in large part on help from New York police officials.
News & Media
We rely in part on philanthropic donations to try and find these answers.
News & Media
Expert writing Tips
Best practice
Always use the correct preposition. The proper expression is "rely on", not "rely in". For example, instead of "We rely in donations", say "We rely on donations."
Common error
Avoid substituting "on" with "in" after "rely". Although "rely in" appears in some contexts, it's grammatically incorrect. Always double-check your preposition usage to maintain accuracy in your writing.
Source & Trust
85%
Authority and reliability
2.3/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "rely in" functions as a prepositional phrase, typically intended to express dependence or reliance. However, according to Ludwig AI, it is grammatically incorrect. The correct form is "rely on".
Frequent in
Science
34%
News & Media
33%
Formal & Business
16%
Less common in
Encyclopedias
0%
Wiki
0%
Reference
0%
Ludwig's WRAP-UP
While the phrase "rely in" appears frequently across various sources, it's essential to recognize that it is considered grammatically incorrect. The correct and widely accepted form is "rely on". As Ludwig AI points out, using "rely in" is a common error, and writers should strive to use "rely on" or other alternatives such as ""depend on"" or "count on" to maintain grammatical accuracy and clarity. Remember to always double-check preposition usage to ensure correctness in writing. While examples of "rely in" are numerous, adhering to standard grammar is crucial for effective communication.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
depend on
Replaces "rely" with "depend", maintaining the core meaning of needing or trusting something.
count on
Substitutes "rely" with "count", emphasizing the expectation of support or assistance.
bank on
Uses "bank" instead of "rely", suggesting a strong confidence in a particular outcome.
swear by
Replaces "rely" with "swear", indicating a firm belief in the effectiveness or reliability of something.
put faith in
Emphasizes the aspect of trust and belief.
place confidence in
Highlights the act of trusting something or someone.
rest on
Suggests that something is based or founded upon something else.
hinge on
Indicates that the outcome or success of something is entirely dependent on something else.
trust in
Highlights the aspect of belief and confidence.
believe in
Focuses on having faith or confidence in something.
FAQs
How do I correctly use "rely" in a sentence?
The correct preposition to use with "rely" is "on", not "in". For instance, say "I rely on my friends for support" instead of "I rely in my friends for support".
What's the proper way to say I depend on something for support?
Use the phrase "depend on" or its alternatives. For example, "I "depend on" coffee to wake up in the morning" is correct.
Is "rely in" ever correct in English?
No, "rely in" is generally considered grammatically incorrect. The standard and accepted form is "rely on".
What can I use instead of "rely on" to sound more formal?
For a more formal tone, consider using phrases like "place confidence in" or "rest on", depending on the specific context.
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
85%
Authority and reliability
2.3/5
Expert rating
Real-world application tested