Came out and roared around lake (7)
I believe the answer is:
bloomed
This clue might be a double definition.
'came out' is the first definition.
The definition and answer can be both related to change as well as being past participle verbs.
Perhaps you can see a link between them that I can't see?
'roared around lake' is the second definition.
Although both the answer and definition are past participle verbs, I cannot see how one could define the other.
'and' acts as a link.
Can you help me to learn more?
(Other definitions for bloomed that I've seen before include "developed" , "Came into flower" .)