formal
US /ˈfɔːr.məl/
UK /ˈfɔːr.məl/
1.
done in accordance with rules of convention or etiquette; suitable for a professional or official situation
:
•
The meeting requires formal attire.
•
He made a formal complaint to the manager.
2.
having a set structure or arrangement
:
•
The garden has a very formal design with symmetrical hedges.
•
The document followed a strict formal structure.