formalwear

/ˈfɔːrməlˌwɛr/
noun
  1. Clothes that are appropriate for formal occasions, such as tuxedos, evening gowns, and suits.
    • Most guests arrived in formalwear, including tuxedos and long dresses.
    • She bought a beautiful new gown from the formalwear section.
    • The store rents formalwear for weddings and proms.
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