Open English Wordnet
Nouns
(n)ball, formala lavish dance requiring formal attire Adjectives
(a)formalbeing 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” (s)formalcharacteristic of or befitting a person in authority“formal duties”,
“a formal banquet” (a)formal(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” (s)formallogically deductive“formal proof” (s)courtly, formal, statelyrefined or imposing in manner or appearance; befitting a royal court“a courtly gentleman”