Definition of simplex munditiis in English:

simplex munditiis

Pronunciation /ˌsɪmplɛks mʊnˈdɪtɪɪs/

adjective

rare
  • Elegantly simple; unostentatiously beautiful.

Origin

Mid 17th century. From classical Latin simplex munditiīs, lit. ‘simple in your adornments’ (Horace Odes 1. 5. 5) from simplex simple + munditiīs, ablative plural of munditia.