Definition of au naturel in English:

au naturel

adjective

  • 1[predicative] With no elaborate treatment, dressing, or preparation:

    ‘the cheese is delicious whether au naturel or seasoned’
    • ‘They were not topped with anything but were enjoyed au naturel.’
    1. 1.1humorous Naked:
      ‘the remote beach where we'd been camping au naturel’

Origin

French, literally in the natural (state).

Pronunciation

au naturel

/ˌəʊ natjʊˈrɛl//French o natyʀɛl/