comparison
A practical test for choosing who or whom in modern writing.
If the answer would be he/she, use who. If the answer would be him/her, use whom.
Whom is less common in informal writing. In formal writing, it still appears in object positions.
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Use this quick matrix to compare core words in this guide and jump directly into deeper lookup pages.
Related words can clarify the boundary of a usage rule. Synonyms show nearby meanings; contrast words help identify what the term does not mean in context.
Opposite direction words
Example sentences pulled from our lexical corpus to show natural context.
who
Every person who is alone is alone because they are afraid of others.
whom
You don't marry someone you can live with — you marry the person whom you cannot live without.
whose
Being objective means not telling everybody whose side you are on.
Before applying this guide, write the sentence both ways and ask what changes for the reader. If the change only affects surface style, it may not be worth making.
If the change affects meaning, grammar, credibility, or reader trust, use the more precise option and keep a short note for future edits.
Not outdated, but less frequent outside formal contexts.
In casual writing often yes, but formal writing may expect whom in objects.
Review note: This guide is reviewed by the WordToolSet editorial team for practical usefulness, example quality, and alignment with our editorial standards. Source and data notes are documented on the data sources page, and corrections can be submitted through the corrections workflow.