#rareword

Mesonoxian: of, relating to, or occurring at midnight.

It comes from the Greek mesonýktion, built from meso- (middle) and nyx (night). Simple, precise, and almost entirely forgotten.

What it offers is exactness. Not late, not the dead of night—but specifically midnight: the pivot between one day and the next.

A mesonoxian thought is one that only visits you then. A mesonoxian quiet is the one that settles over a city at that unrepeatable hour.

Use it. The word has been waiting in the dark long enough.