liven upphrasal verb
to become more exciting, or to make an event become more exciting:
The party really livened up when Mattie arrived.
liven something ↔up
Why don't we invite Jane? That'll liven things up!
to make something look, taste etc more interesting [= brighten up]:
Why not liven up the room with some flowers?
to become more interested or excited, or to make someone feel like this:
After a few drinks she livened up a little.