Perk up (5)
'perk up' is the definition.
(livening is a kind of perking up)
This is all the clue.
(Other definitions for liven that I've seen before include "Make (something) more interesting" , "Cheer up" , "Cause excitement" , "Animate, make energetic" , "Make active" .)
'perk up' is the definition.
(animating is a kind of perking up)
This is all the clue.
(Other definitions for animate that I've seen before include "Living" , "get lively" , "Make lively like cartoon" , "Bring to life, like cartoon" , "Spirited" .)