liven up phrasal verb ( see also ↑ liven )
1 . 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!
2 . liven something ↔ up to make something look, taste etc more interesting SYN brighten up :
Why not liven up the room with some flowers?
3 . to become more interested or excited, or to make someone feel like this:
After a few drinks she livened up a little.