etiquette noun

ADJ. professional, social He showed his contempt for social etiquette by not wearing a tie. | correct What's the correct etiquette when addressing a judge? | strict the strict etiquette of palace life

VERB + ETIQUETTE breach He had breached etiquette by not informing his superiors of his decision.

ETIQUETTE + VERB require sth Etiquette requires that the bride's father makes a speech.

PHRASES a breach of etiquette The solicitor was accused of a breach of professional etiquette. | matters of etiquette He is an expert on matters of etiquette. | the rules of etiquette She knew how to address bishops according to the rules of etiquette. | a stickler for etiquette She's a real stickler for etiquette, so you'd better ask her advice.