meanless

adjective2

1. •
   Having no (mathematical) mean, or having a mean of zero.

   • Another unfailing “mean” to characterize such meanless distributions is the logarithmic mean […] — 1994
2. •
   (no longer used) Meaningless, lacking meaning.

   • The window here, and there the door annoys, Then frequent repetitions tire the ear Of meanless speeches, dull and insincere. — 1815