be not the done thing

Of a given behavior, to be unacceptable, inappropriate, or incorrect in a particular social situation. Primarily heard in UK. You should know better than to wear a skirt like that to a formal dinner; it is simply not the done thing! I'm so glad smoking indoors is not the done thing anymore!

Common Names:

Name	Pronounced	Usage
Siwan	-	Welsh
Batbayar	-	Mongolian
Susie	['su:zi]
Carleton	KAHRL-tən	English
Andrina	an-DREEN-ə	English (Rare)
Nikita (2)	-	Indian, Marathi, Hindi