undrainable
adjEtymology From un- + drainable.
1
That cannot be drained.
- an undrainable pond
- 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.'1946, Mervyn Peake, Titus Groan, London: Eyre & Spottiswoode, →OCLC: