the GNU version of the Collaborative International Dictionary of English
adj. Lacking vigor; weak; spiritless.
adj. Free from sexual lust.
The Century Dictionary and Cyclopedia
Listless; languid; lifeless; indifferent.
Word Usage
"Moreover, I welcome the coming of a new day when we will all be lustless, righteous vessels floating in a single, ever-expanding universe that, long ago, flew out of a magical woman's baby-deploying cavity."