undrainable

English

Etymology

From un- +‎ drainable.

Adjective

undrainable (comparative more undrainable, superlative most undrainable)

1. That cannot be drained.

   an undrainable pond

   • 1946, Mervyn Peake, Titus Groan, London: Eyre & Spottiswoode, →OCLC:

     It was as though it [the rain] defied the Castle's inmost faith; taunted it with a dull, ignorant descent of blasphemy, as though the undrainable clouds were muttering: 'What is an Earling to us? It is immaterial.'