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 quote

Justyna Jupowicz-Kozak

CEO of Professional Science Editing for Scientists @ prosciediting.com

MitStanfordHarvardAustralian Nationa UniversityNanyangOxford

in whom

Grammar usage guide and real-world examples

USAGE 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

Human-verified examples from authoritative sources

Exact Expressions

60 human-written examples

In whom?

News & Media

The New York Times

In whom should we trust?

News & Media

The New Yorker

Courts differ in whom they accept.

News & Media

The Economist

Two patients with LS are presented in whom OMMP developed.

We present 13 patients in whom this technique was applied.

We follow people in whom we believe.

Clement, in whom black bile generously flows, works at home.

News & Media

The New Yorker

One enemy in whom I planted sixteen seeds.

News & Media

The New Yorker

Paterno is the one in whom so much was invested.

In whom or what, then, does Neil place his faith?

News & Media

The New York Times

(What changes are to be brought about? In whom?

Show more...

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.

Antonio Rotolo, PhD - Digital Humanist | Computational Linguist | CEO @Ludwig.guru

Antonio Rotolo, PhD

Digital Humanist | Computational Linguist | CEO @Ludwig.guru

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.

Expression frequency: Very common

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.

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.

ChatGPT power + Grammarly precisionChatGPT power + Grammarly precision
ChatGPT + Grammarly

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.

Source & Trust

86%

Authority and reliability

4.6/5

Expert rating

Real-world application tested

Most frequent sentences: