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
must repay
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "must repay" is correct and usable in written English.
It can be used when indicating an obligation or requirement to return money or a favor. Example: "If you borrow money from a friend, you must repay them by the agreed date."
✓ Grammatically correct
News & Media
Academia
Science
Alternative expressions(19)
due to repay
due to
is equivalent to
in the wishes of
rapidly thereafter
for the immediate future
Very soon
somewhere later
one week before
at the early time
in the next weeks
during the previous years
it is important to remember
not yet completed
in accordance with direction from
a couple of books before
if not soon
in two days
as excellent as
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
Li must repay the high-interest loan in October.
News & Media
And after five years, borrowers must repay the entire balance.
News & Media
Portugal must repay more than €12 billion in the first half of 2011.
News & Media
A minority of candidates, with leftover money or inadequate records, must repay funds.
News & Media
During 2015 Russia's firms must repay $100 billion-worth of foreign debt.
News & Media
Should 38 Studios fail, Rhode Island taxpayers must repay any outstanding debt.
News & Media
Lower ratings typically result in higher interest rates – increasing the amount municipal borrowers must repay investors.
"If you sell in the first five years you must repay any tax relief," Khalaf says.
News & Media
Yet if the periphery must repay its debts, cheaper rates will make the job easier.
News & Media
She must repay the grocer the face value of the stolen tickets.
News & Media
It is their parents who must repay their bills at the end of the day.
News & Media
Expert writing Tips
Best practice
When using "must repay", ensure the context clearly defines what is being repaid (e.g., money, debt, favor) and to whom. Clarity is key to avoid ambiguity.
Common error
Avoid using "must repays" instead of "must repay" with singular subjects. The modal verb "must" doesn't change form based on the subject.
Source & Trust
89%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "must repay" functions as a modal verb phrase indicating obligation. According to Ludwig, it is used to express a necessity or requirement to return money or settle a debt. Examples show it applying to individuals, companies, and even governments.
Frequent in
News & Media
78%
Academia
13%
Science
9%
Less common in
Formal & Business
0%
Encyclopedias
0%
Wiki
0%
Ludwig's WRAP-UP
The phrase "must repay" is a common and grammatically correct way to express a strong obligation to return something, typically money or a debt. As Ludwig AI indicates, it frequently appears in contexts ranging from news reports to academic discussions. When using "must repay", ensure that the subject, object, and recipient of the repayment are clearly defined to avoid ambiguity. While "must repay" indicates a firm obligation, alternatives like "is obliged to return" or ""should repay"" offer variations in formality and strength of the obligation.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
is obliged to return
Replaces "must" with a more formal phrasing, emphasizing the binding nature of the obligation.
is required to reimburse
Replaces "repay" with the more formal "reimburse", implying a return of funds already spent.
has a duty to pay back
Substitutes "repay" with "pay back", adding "duty" to stress the moral or legal imperative.
is liable to refund
Emphasizes legal or contractual responsibility using "liable" and replaces "repay" with "refund", implying a return of money.
needs to pay off
Uses a phrasal verb, "pay off", which is slightly more informal than "repay" and often refers to debts.
is accountable for settling
Highlights responsibility and the act of resolving a debt or obligation.
is compelled to remit
Replaces "must" with "compelled" and "repay" with "remit", both indicating a strong sense of obligation or requirement.
is bound to settle
Indicates a formal agreement to resolve a debt or obligation, using "bound" and "settle".
is on the hook to return
Employs a colloquial expression, "on the hook", emphasizing responsibility, and uses "return" as a general term.
is slated to recompense
Uses "slated" to indicate a scheduled repayment and replaces "repay" with "recompense", suggesting compensation.
FAQs
How do I use "must repay" in a sentence?
Use "must repay" to indicate a strong obligation to return something, typically money or a debt. For example, "The loan requires that you "must repay" the full amount within five years."
What are some alternatives to "must repay"?
Alternatives include phrases like "is obliged to return", "has a duty to pay back", or "is required to reimburse", depending on the context.
Is it better to say "must repay" or "has to repay"?
"Must repay" implies a stronger obligation than "has to repay". "Must" often suggests a legal or moral imperative, while "has to" can indicate a general requirement. The choice depends on the specific context.
What's the difference between "must repay" and "should repay"?
"Must repay" indicates a firm obligation with potentially serious consequences for non-compliance. "Should repay" suggests a recommendation or expectation, but it doesn't carry the same weight of necessity. The phrase "should repay" is less forceful.
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
89%
Authority and reliability
4.5/5
Expert rating
Real-world application tested