Meaning of “know sth from sth” in the English Dictionary

british dictionary

"know sth from sth" in British English

See all translations

know sth from sth

phrasal verb with know uk /nəʊ/ us /noʊ/ verb knew, known

to know the difference between two things and therefore be able to recognize either, used especially to mean that you have a good knowledge and understanding of a particular subject:

Computer expert? He doesn't know a mouse from a modem! (= He knows nothing about computers.)

(Definition of “know sth from sth” from the Cambridge Advanced Learner’s Dictionary & Thesaurus © Cambridge University Press)

Need a translator?

Translator tool

Get a quick, free translation!