CONVENTION

a generally agreed upon practice or attitude

something regarded as a normative example

SYN - formula, normal, pattern, rule

"It was due to this convention that he was expected to shake her hand when she arrived, and his refusal was the first sign of his rebellion."

"This idea of their being a true concept of justice and a group of humans capable of distributing it was nothing but a mere convention the people had established due to their haughtiness."

"He wasn't concerned with the conventions of the society he lived in, he was only concerned with the rules and attitudes of the great men of all generations and societies."

"Surprisingly the anarchists won the election, all conventions were overturned, and the country slipped into chaos."