Standard or customary behaviour (4)

I believe the answer is:

norm

(Other definitions for norm that I've seen before include "Average result" , "Small boy" , "Standard amount or customary behaviour" , "Required or acceptable standard" , "Most frequent state" .)

I've seen this clue in The Sun.

Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.