formal
//ˈfɔːrməl//
Adjective
Following or being in accordance with established forms, conventions, or rules; official or ceremonial in nature
The ambassador attended a formal dinner at the palace.
Relating to or involving outward form or structure rather than content or substance
The agreement was a formal recognition of their independence.
Requiring or characterized by conventional dress or behavior; not casual or relaxed
The wedding reception was a formal event, so everyone wore suits and dresses.
Done or made officially or explicitly; having legal or official status
We need to make a formal complaint to the company.
Characterized by strict adherence to prescribed forms or procedures; methodical and precise
The company follows a formal process for reviewing all applications.
Noun
An event or occasion requiring formal dress, such as a dance or ceremony
She bought a new dress for the formal next week.
An evening gown or other formal attire
She wore a beautiful formal to the gala.