open-air

open-air (not comparable)

1. Located or taking place outdoors.

   Synonyms: alfresco, outdoor

   Antonyms: indoor, inside, inner, internal, interior, inward

   • 1915, William Campbell, Sketches from Formosa‎^[1], Marshall Brothers Limited, page 33:

     All along the way we enjoyed very favourable opportunities for open-air preaching, and for disposing of large quantities of Christian books and tracts.

   • 2024 April 3, Richard Foster, “Training the next generation of engineers”, in RAIL, number 1006, page 48:

     Secondly, preserved railways are not 24/7 operations. There are closed seasons where they can be turned into open-air classrooms.

• open-air museum

• open air

• one pair, Peraino, apeiron, Peorian