Fellow with a beagle, surprisingly well-behaved? (10)
I believe the answer is:
manageable
'well-behaved?' is the definition.
Both the answer and definition are adjectives. Maybe they are linked in a way I don't understand?
'fellow with a beagle surprisingly' is the wordplay.
'fellow with' becomes 'man' (I've seen this in other clues).
'surprisingly' indicates an anagram (a surprising ordering of the letters).
'beagle' anagrammed gives 'geable'.
'man'+'a'+'geable'='MANAGEABLE'
Can you help me to learn more?
(Other definitions for manageable that I've seen before include "Open to being controlled" , "Able to be controlled" .)