decorum

 
Pronunciation: /dɪˈkɔːrəm/

noun

[mass noun]
  • behaviour in keeping with good taste and propriety: he had acted with the utmost decorum
  • etiquette: he had no idea of funeral decorum
  • (decorums) archaic particular requirements of good taste and propriety.
  • archaic suitability to the requirements of a person, rank, or occasion.

Origin:

mid 16th century (as a literary term, denoting suitability of style): from Latin, neuter of the adjective decorus 'seemly'