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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
once they reply
Grammar usage guide and real-world examplesUSAGE SUMMARY
'once they reply' is a grammatically correct sentence.
You can use it in any written form of English. For example: I will be able to provide you with more information once they reply.
✓ Grammatically correct
Science
News & Media
Wiki
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
In its simplest form, an SP forwards its VN request to multiple known/trusted InPs; once they reply back with embeddings and corresponding prices, the SP chooses the VN embedding with the lowest price similar to a bidding process.
Once they reply back then ask them to share it if they like it and if you have written a good article they will share it and may link to it in future.
News & Media
Once they reply be very nice to them and get them to trust you.
Wiki
Human-verified similar examples from authoritative sources
Similar Expressions
57 human-written examples
Never call, e-mail or text message more than once a day unless they reply.
Wiki
Once they complete a mission, they reply to the message with a code and get a free load, or minutes, on their prepaid mobile.
News & Media
In fact, nodes start to move once they receive the reply packet and reach the final destination.
The Queen replied understandingly: "Once they find out you lot can't help them, they all write to me".
News & Media
She naively replied that "once they remove the Shah, then later they would remove the mullahs also". I told her that it may not be easy to remove religious clergy who will torture and execute opponents and justify that in the name of Allah.
News & Media
When all the organizations reply at once, they send a landslide of useless data to the unwitting addressee.
News & Media
Remember that once you reply, you cannot take it back.
Wiki
Again, once you reply, you cannot take it back.
Wiki
Expert writing Tips
Best practice
When using "once they reply", ensure the subsequent action is clearly linked to their response. For example, "Once they reply, you can proceed with the next step."
Common error
Avoid using "once they reply" without specifying what happens next. This can leave the sentence incomplete and unclear. Always follow it with the action that depends on their response.
Source & Trust
82%
Authority and reliability
4.1/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "once they reply" functions as an adverbial clause of time, indicating when a particular action will take place. It sets a condition that must be met before the main clause can occur. As Ludwig AI indicates, the phrase is grammatically correct and suitable for general use.
Frequent in
News & Media
33%
Science
33%
Wiki
33%
Less common in
Formal & Business
0%
Encyclopedias
0%
Reference
0%
Ludwig's WRAP-UP
In summary, "once they reply" is a grammatically correct adverbial clause used to indicate the timing of subsequent actions dependent on receiving a response. Ludwig AI confirms its validity for general usage. It's most commonly found in neutral contexts such as news, scientific articles, and wiki content, and it’s important to clearly specify the action that will occur after the response. While "once they reply" can be used in various settings, consider alternatives like ""after they respond"" for a simpler tone or "upon their response" for added formality.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
after they respond
Focuses on the action of responding itself, similar to the original phrase but with a slight shift in wording.
once they have answered
Emphasizes the completion of answering, adding a sense of finality.
when they get back to you
Highlights a return of communication, often implying a delay.
upon their response
More formal, using 'upon' to indicate immediacy after the response.
following their reply
Similar to 'upon their response' but slightly less formal.
as soon as they answer
Stresses the immediacy of the subsequent action after answering.
after receiving their answer
Highlights the act of receiving the answer as a prerequisite.
when a response is received
Passive construction, focusing on the reception of a response rather than the act of replying.
if they provide a response
Introduces a conditional element, depending on whether a response is given.
provided they answer
Similar to 'if they provide a response' but slightly more formal.
FAQs
How can I rephrase "once they reply" to sound more formal?
For a more formal tone, consider using phrases like "upon their response" or "following their reply". These options add a touch of formality suitable for professional or academic contexts.
What does "once they reply" imply about the timing of events?
"Once they reply" indicates that an action will occur immediately "after they respond". It sets a condition where the reply is a prerequisite for the subsequent event.
Is there a difference between "once they reply" and "if they reply"?
Yes, "once they reply" implies a higher expectation of a response and a more direct link to a following action. "If they reply" is more conditional and suggests uncertainty about whether a response will be received.
What are some alternatives to "once they reply" that emphasize speed?
To emphasize speed, you could use phrases like "as soon as they answer" or "immediately after they reply". These options highlight the promptness of the subsequent action.
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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
82%
Authority and reliability
4.1/5
Expert rating
Real-world application tested