semiformal

About 0.05 uses per million words.

Meaning

1. adjective Somewhat formal.
2. adjective Of clothing: having a level of formality between that of informal and formal wear.
3. adjective Of an event: having a semiformal dress code.
4. noun A social event in which one is expected to dress in semiformal wear.

Similar words

formal black-tie semi-formal formalish semi-informal semicolloquial semiceremonial semisolemn semi-jocular semicasual

Often followed by

and or organization dress wedding evening attire writing dinner