Know from Meaning in English
expression
Definition
To identify or recognize someone or something based on specific information, appearance, or experience. Often used to say how you recognize someone or the source of your knowledge.
Usage & Nuances
'Know from' is informal and often followed by a noun or phrase: 'I know her from school.' It can refer to recognizing someone by their appearance or to the context or source of familiarity. Don't confuse with 'know about' (have information) or 'know of' (be aware of existence).
Example Sentences
I know her from school.
basic
He knows me from the gym.
basic
Do you know this song from the radio?
basic
We only know each other from online chats, not in person.
natural
People often know my brother from his YouTube videos.
natural
I can't know him from just a photo—he looks so different in real life!
natural