The main difference between “who” and “whom” is that “who” is used as a subject pronoun, while “whom” is used as an object pronoun. In casual speech, “who” is often used in place of “whom,” but in formal writing, “whom” remains the correct choice when referring to an object in a sentence.
In the English language, the distinction between “who” and “whom” can cause confusion for many writers and speakers. While both words are related to questions and relative clauses, they serve different grammatical roles. “Who” and “whom” aren’t interchangeable in all contexts, especially in formal writing. Understanding when to use each can elevate your writing and ensure you communicate effectively, whether in academic, business, or casual settings.
Quick Answer
- The main difference between “who” and “whom” is that “who” is used as a subject pronoun, while “whom” is used as an object pronoun. In casual speech, “who” is often used in place of “whom,” but in formal writing, “whom” remains the correct choice when referring to an object in a sentence.
In this article, we’ll break down the difference between “who” and “whom,” offer tips on when to use each, and explore common mistakes to avoid. Whether you’re working on a professional report or writing an email, mastering the use of “who” vs. “whom” can boost your grammatical confidence.
Why People Confuse Them
The confusion between “who” and “whom” largely stems from their similar meanings and the fact that “who” is far more commonly used in everyday speech. The distinction between subject and object pronouns isn’t always intuitive, and many native English speakers may not even be aware of when they’re using the correct form. As language evolves, the use of “whom” has become less common, leading to further confusion.
Key Differences At A Glance
- Who is used when referring to the subject of a sentence, the one performing the action.
- Whom is used when referring to the object of a sentence, the one receiving the action.
- “Whom” is often replaced with “who” in informal, conversational English.
- “Whom” is still preferred in formal writing and speech.
Meaning and Usage Difference
Who functions as a subject pronoun. It is used when the person or thing you are talking about is the subject of the sentence—the one doing the action. For example:
- “Who is coming to the party?”
Here, “who” refers to the subject (the person coming to the party).
Whom is an object pronoun. It is used when the person or thing you are talking about is the object of the action. It follows verbs or prepositions:
- “To whom did you give the book?”
In this example, “whom” is the object of the verb “give.”
While this rule holds true in formal English, many people use “who” even when “whom” is technically correct, especially in conversational contexts.
Tone, Context, and Formality
The use of “whom” is considered more formal, and it is mostly found in written language, particularly in professional, academic, or legal contexts. In casual speech, “whom” is often replaced by “who.” For example:
- Formal: “To whom did you speak?”
- Informal: “Who did you speak to?”
Despite this shift in casual conversation, “whom” still maintains its place in formal writing. It’s important to consider your audience and the tone of your writing before deciding whether to use “who” or “whom.”
Which One Should You Use?
To decide between “who” and “whom,” you need to determine whether the word is functioning as a subject or object. If the word is the subject of the sentence (the one performing the action), use “who.” If the word is the object (the one receiving the action), use “whom.”
A good trick for testing whether “whom” is correct is to try replacing it with a personal object pronoun (like him, her, them, etc.). If it sounds correct, then “whom” is likely the right choice:
- “To whom did you give the book?” → “To him did you give the book?”
This works because “him” is the correct object pronoun here.
When One Choice Sounds Wrong
When “whom” sounds awkward or forced, it’s likely because you are in a conversational context where the formal structure isn’t needed. In these cases, replacing “whom” with “who” is acceptable in everyday speech:
- “Whom did you see?” → “Who did you see?”
However, if you’re writing for a more formal audience, you should stick to the rules and use “whom” appropriately.
Common Mistakes
One of the most common mistakes is using “who” when “whom” is required. For instance:
- Incorrect: “To who did you send the invitation?”
- Correct: “To whom did you send the invitation?”
Remember, if the pronoun is the object of the sentence, “whom” is almost always the better choice. If unsure, check whether you can substitute “him” or “her” in place of “whom” to see if it feels natural.
Everyday Examples
To clarify further, here are some practical examples:
- Who: “Who is coming to the event?” (subject of the sentence)
- Whom: “Whom did you invite to the event?” (object of the verb “invite”)
- Who: “Do you know who she is?” (subject in a question)
- Whom: “I don’t know to whom the letter was addressed.” (object of the preposition “to”)
Dictionary-Style Word Details
Verb
- Who: No verb-specific entry for “who” as it functions primarily as a subject pronoun.
- Whom: As an object pronoun, “whom” can appear in verb phrases like “whom I love” or “whom she met.”
Noun
- Who: Not used as a noun.
- Whom: Not used as a noun.
Synonyms
- Who: No exact synonym, though “whom” can sometimes substitute in formal contexts.
- Whom: Closest alternatives are “whomever” or “the person who” in less formal speech.
Example Sentences
- Who: “Who is the leader of the group?”
- Whom: “Whom do you trust with your secret?”
Word History
- Who: Originates from Old English “hwā,” meaning “who.”
- Whom: Also comes from Old English “hwām,” meaning “to whom.”
Phrases Containing
- Who: “Who knows?” (question)
- Whom: “To whom it may concern.” (formal address)
FAQ
1. Can I use “whom” in casual conversations?
- In casual speech, “whom” is often replaced with “who.” However, using “whom” in formal contexts, like writing or professional settings, is still preferred.
2. When do I use “who” instead of “whom”?
- Use “who” when it is the subject of a sentence or clause. For example, “Who is that man?”
3. Is it wrong to use “who” instead of “whom”?
- It’s not necessarily wrong in informal speech, but it’s grammatically incorrect in formal writing where “whom” is required.
Conclusion
Mastering the difference between “who” and “whom” may seem like a small detail, but it plays a significant role in improving your language skills, especially in formal writing. By remembering that “who” refers to the subject and “whom” refers to the object, you can communicate more clearly and confidently. Keep practicing, and don’t be afraid to use “whom” when it’s called for—you’ll be glad you did.
