Spooner's loose caveman an uppity bounder (4,4)
I believe the answer is:
tree frog
'bounder' is the definition.
Although both the answer and definition are singular nouns, I don't understand how one could define the other.
I can't explain the rest of the clue.
Can you help me to learn more?
(Other definitions for tree frog that I've seen before include "Arboreal amphibian" , "Amphibian found in the branches?" , "High jumper" .)