— livener , n.
/luy"veuhn/ , v.t.
1. to put life into; rouse; enliven; cheer (often fol. by up ): What can we do to liven up the party?
v.i.
2. to become more lively; brighten (usually fol. by up ): If this party doesn't liven up soon, let's leave.
[ 1880-85; aph. var. of ENLIVEN ]