frigify

verb1

1. •
   (no longer used) To make cold or frigid.

   • […]then frigify it, & reserve it in a pot, & drinck heerof thrice a vveecke, at Even, and at Morne, a spoone full, this corrobarateth the Braynes, and is adiuvable to the Memorye, and causeth Sleep. — 1599