formal
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(a) 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
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(s) characteristic of or befitting a person in authority
- formal duties
- an official banquet
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(a) (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) represented in simplified or symbolic form schematic, conventional,
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(s) logically deductive
- formal proof
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(s) refined or imposing in manner or appearance; befitting a royal court
- a courtly gentleman
Nouns
- (n) a lavish dance requiring formal attire ball,
- (n) a gown for evening wear dinner dress, dinner gown, evening gown,