Know somebody by sight

phrase

To recognize a person visually but not know them personally.

I know my neighbor by sight, but we've never spoken to each other.

Idiomatic

Definition 1 of 1

Pro Tip 1/3

This phrase implies you can visually recognize someone but lack personal connection or interaction.

At company events, I know many colleagues by sight but haven't worked with them directly.

Pro Tip 2/3

Use this phrase to describe a low level of acquaintance, mainly through frequent visual encounters.

I know some parents by sight from school meetings.

Pro Tip 3/3

Avoid using this phrase when introducing someone, as it indicates you're not personally acquainted.

I can't introduce you to her; I only know her by sight.

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