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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
lock them in
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "lock them in" is correct and usable in written English.
You can use it when referring to locking someone or something up to secure them, for example: "The police locked the criminals in the jail cell."
✓ Grammatically correct
News & Media
Academia
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
53 human-written examples
Lock them in schools, not prisons.
And then we had to lock them in the basement.
News & Media
The teller turned an iron wheel to lock them in.
News & Media
"We bet on the right people, and we lock them in".
News & Media
I later lock them in to account for this later on.
News & Media
Good business practice is to identify your assets and lock them in.
News & Media
Human-verified similar examples from authoritative sources
Similar Expressions
7 human-written examples
"We locked them in.
News & Media
"His wife locked them in the bedroom and ran off.
News & Media
He said he locked them in his office.
News & Media
He locked them in his castle & made them listen to his poetry.
News & Media
Last week, in order to try to end the debate, the Democratic Senate president locked them in.
News & Media
Expert writing Tips
Best practice
When using "lock them in", consider the connotations of confinement and ensure it aligns with your intended message. For instance, using it in a business context can refer to securing favorable rates, while in other contexts it might imply physical restriction.
Common error
Be careful not to use "lock them in" when a softer approach is needed. For example, saying "Let's "secure their commitment"" might be more appropriate than "Let's "lock them in"" if you're aiming for a collaborative agreement rather than a binding contract.
Source & Trust
84%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "lock them in" functions primarily as a phrasal verb, where "lock" is the verb and "them" and "in" are the object and particle, respectively. Ludwig AI confirms the usability of this phrase in English.
Frequent in
News & Media
74%
Academia
13%
Wiki
13%
Less common in
Science
8%
Formal & Business
2%
Encyclopedias
0%
Ludwig's WRAP-UP
The phrase "lock them in" is a versatile phrasal verb used to describe both physical confinement and metaphorical securing. Ludwig AI confirms its correct usage in English. With high frequency in News & Media, the phrase's register is generally neutral, though the connotation can shift based on context. When employing this phrase, consider the implications of confinement and select alternative phrasings like "secure them" or "commit them" to fine-tune your message. The primary function is to denote the action of securing or confining, as illustrated across examples ranging from prison cells to business contracts.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
confine them
Focuses on the act of restricting someone or something to a specific space.
imprison them
Emphasizes the act of putting someone in prison.
secure them
Implies making something safe or protected, not necessarily through physical confinement.
trap them
Suggests a situation where someone is unable to escape.
encage them
Refers to putting someone in a cage.
close them in
Highlights the action of surrounding someone to prevent escape.
seal them off
Indicates isolating someone or something from the outside world.
corner them
Suggests forcing someone into a position from which they cannot easily escape.
box them in
Implies restricting someone's movement or options.
restrict them
Focuses on limiting someone's freedom or movement.
FAQs
How can I use "lock them in" in a sentence?
You can use "lock them in" to describe physically confining someone, such as "The guards "locked them in" the prison cell". It can also be used metaphorically, like "The company tried to "lock them in" with a long-term contract".
What does "lock them in" mean in a business context?
In a business context, "lock them in" typically means securing a customer or supplier with a contract or agreement that makes it difficult for them to switch to a competitor. It can also mean securing favorable rates, as in "Brands with deep pockets may be able to negotiate favorable advertising rates and "lock them in" for several years".
What are some alternatives to "lock them in" that don't imply physical restraint?
Depending on the context, you could use alternatives like "secure them", "commit them", or "retain them". These phrases avoid the negative connotations of physical confinement while still conveying the idea of ensuring someone's involvement or commitment.
Is it ever appropriate to use "lock them in" in a positive way?
Yes, particularly in business or sports. For example, "The team needs to "lock them in" to a long-term contract" implies securing a valuable asset. However, be mindful of the potential for negative connotations, especially if the context involves people rather than assets.
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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
84%
Authority and reliability
4.5/5
Expert rating
Real-world application tested