unpolishable

unpolishable

(ʌnˈpɒlɪʃəbəl)
adj
1. incapable of being made smooth or shiny
2. incapable of being made refined or civilized
References in periodicals archive ?
Shoeshine boys plead for a crack at unpolishable plastic flip-flops while nouveau-fiche kids trawl the streets, hip-hop music pumping out of their ears' tinted windows.