Definition of unlittered in English:

unlittered

Pronunciation /(ˌ)ʌnˈlɪtəd/

adjective

  • Not littered; especially not covered or strewn with litter.

Origin

Early 17th century; earliest use found in John Donne (1572–1631), poet and Church of England clergyman. From un- + litter + -ed.