The Collaborative International Dictionary
Lustless
Lustless \Lust"less\, a. [CF. Listless.]
Lacking vigor; weak; spiritless. [Obs.]
--Spenser.Free from sexual lust.
Wiktionary
lustless
a. 1 Without sexual lust. 2 (context obsolete English) Lacking vigour; weak; spiritless.
Usage examples of "lustless".
But he'd been a loving man in his lustless way, and his wife Bernadette had shared his indifference to sex, so his unenthusiastic member had never been a bone of contention between them.