Enthusiastic supporter backing characters from craft union (3)
I believe the answer is:
nut
'enthusiastic supporter' is the definition.
The answer and definition can be both people as well as being singular nouns.
Maybe they are linked in a way I don't understand?
'backing characters from craft union' is the wordplay.
'backing' says the letters should be written in reverse.
'characters from' indicates the answer is hidden within the clue.
'tun' is hidden in the letters of 'craft union'.
'tun' in reverse letter order is 'NUT'.
Can you help me to learn more?
(Other definitions for nut that I've seen before include "something turned when making fast > food" , "organized teachers" , "Fruit with hard shell" , "Bolt counterpart" , "Enthusiastic person" .)