Synonyms for formal

noun

• a lavish dance requiring formal attire
• a gown for evening wear

adjective

• represented in simplified or symbolic form
• refined or imposing in manner or appearance; befitting a royal court
• being in accord with established forms and conventions and requirements (as e.g. of formal dress)
• characteristic of or befitting a person in authority
• logically deductive
• (of spoken and written language) adhering to traditional standards of correctness and without casual, contracted, and colloquial forms