Burdensome legal procedure? (6)
I believe the answer is:
trying
'burdensome' is the definition.
(thesaurus)
I can't explain the remainder of the clue.
Can you help me to learn more?
(Other definitions for trying that I've seen before include "Hard to endure" , "Difficult - annoying" , "distressing" , "Tiresome" , "Making attempts" .)