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

with whom

Grammar usage guide and real-world examples

USAGE SUMMARY

"with whom" is correct and usable in written English.
You can use it to introduce a clause that defines the person or people being referred to, as in: She was the only person, with whom I could share my secrets.

✓ Grammatically correct

News & Media

Science

Human-verified examples from authoritative sources

Exact Expressions

60 human-written examples

With whom?

News & Media

The New York Times

In consultation with whom?

News & Media

The New Yorker

And with whom?

News & Media

The New York Times

But with whom?

News & Media

The Guardian

Or with whom.

News & Media

The New York Times

Friends with whom she talks?

News & Media

The New Yorker

What mattered was with whom.

News & Media

The New York Times

With whom are they fighting?

News & Media

The New York Times

Now who's messing with whom?

News & Media

The New Yorker

Mainly, who's talking with whom?

News & Media

The New York Times

With whom is she arguing?

News & Media

The New Yorker
Show more...

Expert writing Tips

Best practice

Use "with whom" in formal writing and when constructing questions where the person is the object of the preposition.

Common error

Avoid using "with who" in formal writing. While increasingly common in informal speech, it is still considered grammatically incorrect in formal contexts. Always use "with whom" when a preposition precedes the pronoun.

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

4.5/5

Expert rating

Real-world application tested

Linguistic Context

The phrase "with whom" functions as a prepositional phrase, typically introducing a relative clause or forming part of an interrogative sentence. It identifies the person that is the object of the preposition 'with'. Ludwig provides numerous examples illustrating this function.

Expression frequency: Very common

Frequent in

News & Media

60%

Science

20%

Wiki

10%

Less common in

Formal & Business

5%

Encyclopedias

3%

Reference

2%

Ludwig's WRAP-UP

In summary, "with whom" is a grammatically correct and commonly used phrase, primarily functioning as a prepositional phrase to introduce relative clauses or interrogative sentences. As confirmed by Ludwig, it specifies the person involved in an action or relationship and is particularly suited to formal and scientific contexts. While the alternative "with who" exists, "with whom" remains the preferred choice for maintaining grammatical correctness in formal writing. Its prevalence in sources like The New York Times and academic journals underscores its suitability for professional communication.

FAQs

How to use "with whom" in a sentence?

"With whom" is used to introduce a clause where you're asking about or specifying the person someone is interacting with. For example, "With whom did you speak?" or "She is the person "with whom I work"".

Is "with who" grammatically correct instead of "with whom"?

While "with who" is often heard in casual conversation, it's generally considered grammatically incorrect in formal writing and speech. "With whom" is the correct form when the pronoun is the object of the preposition "with".

What's the difference between "with whom" and "who"?

"Who" is a subjective pronoun (used as the subject of a verb), whereas "with whom" is an objective pronoun (used as the object of a preposition or verb). Therefore, you'd use "with whom" when "with" is part of the phrase.

When should I use "with whom" instead of other prepositions?

Use "with whom" specifically when you want to indicate association, accompaniment, or interaction with a person and the preposition "with" accurately reflects that relationship. For example, "With whom did you travel?" indicates companionship, while other prepositions might imply different relationships.

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

4.5/5

Expert rating

Real-world application tested

Most frequent sentences: