semiformal
- s moderately formal; requiring a dinner jacket
he wore semiformal attire
- The crowd, mostly teen-agers in semiformal dress, spilled from the parlor to the patio, swirled around the skating rink, tennis courts and swimming pool.
- Last week in Cleveland, some 20,000 Prophetsand perhaps 2,000 "Daughters of Mokanna" (wives of the Prophets, members of local "Caldrons") in "semiformal sport wear"had fun.
- The Customs, available in "formal or semiformal" body styles, sacrifice no dignity for the sake of streamlining.