Definition of uncleanable in English:

uncleanable

Pronunciation /(ˌ)ʌnˈkliːnəbl/ /(ˌ)ʌŋˈkliːnəbl/

adjective

  • That cannot be cleaned; impossible to clean.

Origin

Mid 18th century; earliest use found in Jonathan Swift (1667–1745), writer and dean of St Patrick's Cathedral, Dublin. From un- + clean + -able.