You can of course say calme-toi! to someone you want to settle down; you can also say on s’calme! (from on se calme).
But do you know of a way that doesn’t use the verb calmer?
Here it is:Les nerfs!!!
Nerf, meaning nerve, is pronounced without its final f. Nerf rhymes with mer. The plural nerfs is pronounced just like the singular nerf.
Heille, les nerfs!
Hey, calm down!
Ok, ok, les nerfs!
Ok, ok, calm down!
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