Water getting out of the lake (4)
I believe the answer is:
leak
'water' is the definition.
The definition and answer can be both related to change as well as being verbs in their base form.
Perhaps they are linked in a way I don't understand?
'out of the lake' is the wordplay.
'out of' indicates anagramming the letters.
'lake' anagrammed gives 'LEAK'.
'getting' is the link.
Can you help me to learn more?
(Other definitions for leak that I've seen before include "Unauthorised disclosure of confidential information" , "Unwanted discharge" , "Disclose unauthorised information" , "Seep; disclose" , "Escape - make (confidential information) known" .)