A friend of mine asked me why this sentence is not accepted grammatically.

Whom are you looking for ?

What do you think about this?


Technically, "whom" is the correct form. That said, "who" is also becoming conversationally acceptable.

This link has a pretty good explanation. http://www.ehow.com/how_5564178_use-whom-english.html
Thanks a lot.

I can explain to my friend what you say!

Good luck!
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Technically "whom" is the correct form but "for" is a preposition and you must not end a sentence with a preposition so the grammatically correct way to write the question would be "for whom are you looking?"