Synonyms:
formality, formalities
Meaning: a requirement of etiquette or custom; "a mere formality"
Usage examples
And if both are agreed about it, the details and formalities become a matter of no importance.
Looked upon by the officers as a sort of privileged character, he had the entree at all times, and could go in without countersign, or any of the other formalities usually demanded from a stranger.