vacuity

noun4

1. •
   Emptiness.

   • to find so sensible a breach or vacuity in the course of the passions, by means of this breach in the connexion of ideas[…]. — 1748
2. •
   Physical emptiness, an absence of matter.
3. •
   An empty or inane remark or thing.
4. •
   Idleness; listlessness.