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
what then
Grammar usage guide and real-world examplesUSAGE SUMMARY
"what then" is correct and usable in written English.
The phrase "what then" can be used to ask a question in a variety of situations. For example: "I told him to stop, but he didn't listen - what then?".
✓ Grammatically correct
News & Media
Academia
Science
Alternative expressions(20)
what are the implications
what does that imply
what is the next step
how should we proceed
what is the sacrifice
at what rate
what are the potential outcomes
at what premium
to what degree
how much
at what investment
what are the ramifications
at what altitude
in what measure
at what sacrifice
what are the motivations
what's the downside
what will it entail
what does this mean
at what fare
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
56 human-written examples
What, then?
News & Media
What Then?
News & Media
On what then?
News & Media
What, then, of Germany?
News & Media
JUDGE: From what, then?
News & Media
What, then, of touchscreens?
News & Media
So, what then?
News & Media
What then? what rests?
News & Media
But what then?
News & Media
What then is Coughlin?
News & Media
Human-verified similar examples from authoritative sources
Similar Expressions
1 human-written examples
Then what?
Science
Expert writing Tips
Best practice
Use "what then" to introduce a question that follows logically from a previous statement or situation. It helps to build a clear, sequential argument or narrative.
Common error
Avoid using "what then" when the question doesn't directly relate to the preceding context. Ensure the question flows logically from the previous statement to maintain coherence.
Source & Trust
86%
Authority and reliability
4.6/5
Expert rating
Real-world application tested
Linguistic Context
The primary grammatical function of "what then" is to serve as an interrogative phrase, prompting further inquiry or seeking clarification following a statement or situation. As Ludwig shows, it is a versatile construction, found in various contexts, often leading to a search for solutions, consequences, or next steps.
Frequent in
News & Media
45%
Academia
25%
Science
15%
Less common in
Encyclopedias
5%
Wiki
3%
Formal & Business
2%
Ludwig's WRAP-UP
In summary, "what then" functions as a grammatically sound interrogative phrase widely used to solicit further information or logical consequences, following a prior statement. According to Ludwig, its versatility makes it suitable for both formal and informal contexts, spanning news, academic, and scientific domains. Ludwig AI confirms its correctness and usability. When using "what then", ensure its relevance to the preceding context to maintain coherence. For alternative expressions, consider phrases such as "so what happens next" or "what is the solution" to emphasize different aspects of the inquiry.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
so what happens next
Focuses specifically on the sequence of events and their progression.
what is the consequence
Highlights the result or outcome of a particular action or situation.
what does that imply
Emphasizes the indirect suggestion or underlying meaning.
what follows from that
Indicates a logical deduction or subsequent development.
in that case, what
Sets a conditional scenario before posing the question.
what is the next step
Concerns the progression of actions or procedures.
what is the solution
Directly seeks a way to resolve a problem or difficulty.
what's the alternative
Proposes seeking a different option or course of action.
how should we proceed
Seeks guidance on the correct or best way forward.
what are the implications
Explores the broader effects and potential ramifications.
FAQs
How can I use "what then" in a sentence?
Use "what then" to inquire about the next step, consequence, or logical conclusion following a statement or situation. For example, "If that's the case, "what then"?"
What phrases are similar to "what then"?
Alternatives include "so what happens next", "what is the consequence", or "what are the implications", each emphasizing different aspects of inquiry.
Is "what then" formal or informal?
"What then" is suitable for both formal and informal contexts, depending on the surrounding language and tone. It's commonly used in news, academic writing, and everyday conversation.
How does "what then" differ from "so what"?
"What then" implies a sequence or logical progression, asking about what follows. "So what" /s/so+what expresses indifference or challenges the significance of a statement.
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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
4.6/5
Expert rating
Real-world application tested