Streaking nude wily — difficult to manage (8)
I believe the answer is:
unwieldy
'difficult to manage' is the definition.
I can't judge whether this definition defines the answer.
'streaking nude wily' is the wordplay.
'nude wily' can be anagrammed to 'UNWIELDY'.
Though, I'm not clear how the anagram is indicated.
Can you help me to learn more?
(Other definitions for unwieldy that I've seen before include "Difficult to handle" , "Cumbersome" , "Ponderous" , "Large and awkward to carry or manage" , "Hard to manage" .)