Youngster raised to be equable (3)
I believe the answer is:
pup
'youngster' is the definition.
(I've seen this before)
'raised to be equable' is the wordplay.
'raised' becomes 'up' (similar in meaning).
'to' is a charade indicator (letters next to each other) (I've seen this in other clues).
'be equable' becomes 'p' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'up' put after 'p' is 'PUP'.
Can you help me to learn more?
(Other definitions for pup that I've seen before include "Young of various animals" , "Small palindromic dog" , "Canine young" , "Young animal" , "Youngster" .)