livener

noun2

1. •
   One who, or that which, livens.

   • Too often, it was the potential liveners of society who emigrated, taking their skills and talents and initiative to benefit other countries... — 2005
2. •
   (slang) An alcoholic drink.

   • I needed a few liveners if I was to face, in two hours time, a parade of my words and furtive people on a stage. I ordered a beer. — 1968