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Justyna Jupowicz-Kozak
CEO of Professional Science Editing for Scientists @ prosciediting.com
in whom
Grammar usage guide and real-world examplesUSAGE SUMMARY
"in whom" is a correct and usable phrase in written English.
You can use it when you are referring to someone or something that is the object of a preposition. For example, you could say, "She is a leader in whom I trust."
✓ Grammatically correct
News & Media
Science
Formal & Business
Alternative expressions(8)
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
In whom?
News & Media
In whom should we trust?
News & Media
Courts differ in whom they accept.
News & Media
Two patients with LS are presented in whom OMMP developed.
Science
We present 13 patients in whom this technique was applied.
We follow people in whom we believe.
News & Media
Clement, in whom black bile generously flows, works at home.
News & Media
One enemy in whom I planted sixteen seeds.
News & Media
Paterno is the one in whom so much was invested.
News & Media
In whom or what, then, does Neil place his faith?
News & Media
(What changes are to be brought about? In whom?
Encyclopedias
Expert writing Tips
Best practice
Use "in whom" primarily in formal writing or when a more elevated tone is desired. In more casual contexts, consider using "who" with the preposition placed later in the sentence (e.g., "Who do you believe in?").
Common error
Avoid separating "in" too far from "whom" in formal writing. While ending a sentence with a preposition is acceptable in informal contexts, maintaining the "in whom" structure keeps the writing clear and professional.
Source & Trust
86%
Authority and reliability
4.6/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "in whom" functions as a prepositional phrase introducing a relative clause. It modifies a noun or pronoun, specifying a characteristic or relationship. Ludwig AI indicates its correct usage in English, supported by numerous examples.
Frequent in
Science
38%
News & Media
35%
Formal & Business
27%
Less common in
Encyclopedias
0%
Wiki
0%
Reference
0%
Ludwig's WRAP-UP
In summary, "in whom" is a grammatically correct prepositional phrase used to introduce relative clauses, typically in formal writing. As confirmed by Ludwig AI, it specifies a relationship, characteristic, or quality of a person. While common, its formal tone may not suit all contexts, and simpler alternatives using "who" may be preferable in informal settings. The phrase sees frequent use in scientific and news media sources. When writing, avoid separating "in" and "whom" too much to keep it clear. Examples in Ludwig further illustrate this principle.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
to whom
This is a common alternative that emphasizes the recipient or target of an action or attribute.
of whom
This alternative denotes possession or belonging, indicating a characteristic or quality of the person.
about whom
This phrase replaces "in" with "about", offering a more direct and common way to refer to the subject of the sentence.
with whom
This option indicates association or accompaniment, focusing on a relationship between individuals.
for whom
This alternative emphasizes the beneficiary or the one receiving an action or benefit.
regarding whom
This phrase replaces the preposition "in" with "regarding", shifting the focus to the topic or person being discussed.
by whom
This phrase is used to identify the agent performing an action, often in passive constructions.
from whom
This phrase indicates the source or origin of something, often in the context of receiving information or an object.
concerning whom
Similar to "regarding whom", this option is more formal and emphasizes the topic or matter at hand.
on whom
This phrase focuses on something being placed or dependent upon someone.
FAQs
How can I use "in whom" in a sentence?
Use "in whom" to refer to someone as the object of a preposition, typically in formal contexts. For example, "He is a leader "in whom" many have placed their trust."
What's a simpler alternative to "in whom"?
In less formal situations, you can rephrase sentences to use "who" and move the preposition. For example, instead of "She's someone "in whom" I confide", you could say, "She's someone who I confide in."
Is it ever wrong to use "in whom"?
While grammatically correct, "in whom" can sound overly formal in everyday conversation. Consider your audience and the overall tone of your writing; a simpler construction might be more appropriate in informal settings.
Which is more correct, "in whom" or "who"?
Both are correct, but they suit different contexts. "In whom" is more formal and grammatically precise, while using "who" with a trailing preposition is generally acceptable in modern, informal English. The choice depends on the desired tone and formality of the writing.
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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