noun (n)

• a requirement of etiquette or custom

  perlukan oleh etika atau tersendiri

  Example:
  A mere formality.
  

  Synonym:
  formalities
  

  source: wordnet30
• a manner that strictly observes all forms and ceremonies

  cara yang ketat observes segala bentuk dan upacara

  Example:
  The formality of his voice made the others pay him close attention.
  

  Synonym:
  formalness
  Antonym:
  informality
  

  source: wordnet30
• compliance with formal rules

  dengan pelaksanaan peraturan formal

  Example:
  Courtroom formality.
  

  source: wordnet30
• The condition or quality of being formal, strictly ceremonious, precise, etc.

  syarat atau kualiti yang formal, strictly penuh upacara, tepat, dll.

  source: webster1913