mores
Mores (noun) means the unwritten customs and moral standards that a particular group or society expects people to follow. Example: “Dating apps have changed the social mores around how people meet partners.”
How to use mores
Learner’s notesIn plain EnglishThe shared rules of behaviour a culture expects, even though nobody wrote them down.
Always used in the plural; there is no singular "more" with this meaning. Don't confuse with the comparative word "more."
Fill the gap
Can you complete this real example?
Dating apps have changed the social _____ around how people meet partners.
Etymology
From Latin mores, "customs, character," the plural of mos.