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
should have let
Grammar usage guide and real-world examplesUSAGE SUMMARY
"should have let" is a correct and usable phrase in written English.
It expresses a sense of regret that some action was not taken in the past. For example, you might say: "I should have let you borrow my car; then you wouldn't have missed your appointment."
✓ Grammatically correct
News & Media
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
"You should have let her testify".
News & Media
Maybe I should have let it go.
News & Media
They should have let us stand".
News & Media
"I probably should have let it go.
News & Media
"Never should have let that boy go".
News & Media
We should have let the Conservatives take the blame.
News & Media
It should have let A.I.G., among many others, go bankrupt.
News & Media
Or I should have let you know I was coming.
News & Media
He should have let us live outside his epic fantasies.
News & Media
Mr. Yu said he should have let the moment pass.
News & Media
The Supreme Court should have let this case go forward.
News & Media
Expert writing Tips
Best practice
Use "should have let" to express regret or a missed opportunity, but ensure the context is clear and the intended action is easily understood.
Common error
Avoid using "should have let" in situations where the outcome was predetermined or unavoidable, as this weakens the impact of expressing genuine regret.
Source & Trust
89%
Authority and reliability
4.6/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "should have let" functions as a modal auxiliary verb phrase expressing regret, advice about past actions, or criticism regarding a missed opportunity. Ludwig AI confirms it's a correct and usable phrase. The examples highlight its role in reflecting on past decisions.
Frequent in
News & Media
85%
Formal & Business
7%
Wiki
5%
Less common in
Academia
1%
Science
1%
Reference
1%
Ludwig's WRAP-UP
In summary, "should have let" is a common and grammatically sound phrase used to express regret or critique past decisions. Ludwig AI validates its correct usage. While versatile, it's most prevalent in news and media contexts. For more formal settings, consider alternatives like "ought to have permitted". The phrase carries a sense of missed opportunity and is a valuable tool for expressing hindsight.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
ought to have allowed
Replaces "should" with "ought to", which carries a slightly stronger sense of obligation.
should have permitted
Uses a more formal synonym for "let", indicating a more official context.
it was a mistake not to allow
Explicitly frames the situation as an error in judgment.
I shouldn't have prevented
Focuses on the act of preventing an action that should have been allowed.
I regret not allowing
Expresses direct personal regret about the missed opportunity.
it would have been better to let
Offers a more objective assessment of the situation, suggesting a better course of action.
needed to permit
Shifts the focus to the necessity of granting permission, rather than regret.
we erred in not permitting
Highlights a collective mistake in not granting permission.
it was ill-advised not to let
Emphasizes the poor judgment involved in not allowing something.
a mistake was made in denying
Highlights the occurrence of a mistake in the denial of permission.
FAQs
How can I use "should have let" in a sentence?
Use "should have let" to express regret about not allowing something in the past. For example, "I "should have let" you borrow my book; I didn't realize you needed it so urgently."
What's a more formal alternative to "should have let"?
A more formal alternative is "ought to have permitted". It conveys a similar meaning but is more suitable for professional or official contexts. For example, "The committee "ought to have permitted" the researcher's request for additional funding."
What can I say instead of "should have let" to express regret?
You can use phrases like "I regret not allowing", "it was a mistake not to allow", or "I shouldn't have prevented". These options offer varying degrees of formality and emphasis on the regret. For example, "I "regret not allowing" her to speak her mind."
Is "should have let" appropriate for all contexts?
While generally acceptable, "should have let" might be too informal for some formal or academic writing. Consider using a more formal alternative like "should have permitted" or restructuring the sentence for a more sophisticated tone.
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
4.6/5
Expert rating
Real-world application tested