formal

Adjective

• refined or imposing in manner or appearance; befitting a royal court
  • a courtly gentleman
    

• logically deductive
  • formal proof
    

• represented in simplified or symbolic form

• (of spoken and written language) adhering to traditional standards of correctness and without casual, contracted, and colloquial forms
  • the paper was written in formal English
    

• characteristic of or befitting a person in authority
  • formal duties
    
  • an official banquet
    

• being in accord with established forms and conventions and requirements (as e.g. of formal dress)
  • pay one's formal respects
    
  • formal dress
    
  • a formal ball
    
  • the requirement was only formal and often ignored
    
  • a formal education
    

Noun

• a gown for evening wear

• a lavish dance requiring formal attire

Related words

• Synonyms: 
  courtly , stately , conventional , schematic , dinner dress , dinner gown , evening gown , ball