en connaître un rayon

The French expression “en connaître un rayon” translates literally to “to know a department [in a store]”. English meanings include:

  • to be really clued in
  • to know your stuff
  • to know a thing or two

French-to-French meaning is “etre calé” (to be good at something) and “savoir beaucoup” (to know a a lot).

Here’s an example sentence:

Il habite dans ces montagnes depuis plus que vingt ans. Il connaît toutes les pistes de randonees comme sa poche. En fait, on peut dire qu’il en connaît un rayon. He’s lived in these mountains for more than 20 years. He knows all the hiking trails like the back of his hand. Actually, you can say he knows his stuff.

Speed up your learning with an app

Many of our students have greatly enhanced their learning by using an app. On these pages we've examined the top-30 apps for learning French. On this pages we've written comprehensive reviews for Pimsleur (great for people struggling with pronunciation), Rosetta Stone and FrenchPod101 (both great for visual learners).

A synonym is “s’y connaître en + subject”:

  • Il s’y connait en français. He knows a thing or two about French.

more French expressions

If you've found this post useful you might want to considering looking at our post covering the best apps for learning French. We've looked a total 33 apps and have written comprehensive reviews of Rosetta Stone, Pimsleur and FrenchPod101.

Sign Up For A FREE Trial French Lesson On Skype And Get Instant Access To My French Pronunciation Crash Course.

Get the French Pronunciation Crash Course!