Suit worn by ministerial advisers full of energy? (6)
I believe the answer is:
spades
'suit' is the definition.
(playing card suit)
I can't explain the remainder of the clue.
Can you help me to learn more?
(Other definitions for spades that I've seen before include "Garden tools and card suit" , "Shovels or playing cards" , "Suit in pack of cards" , "Card suits and shovels" , "One of two black suits" .)