Mischievous journey up Parisian street is entertaining (5)
I believe the answer is:
rogue
'mischievous journey up parisian street is entertaining' is the definition.
I can't tell whether this defines the answer.
'journey up parisian street is entertaining' is the wordplay.
'journey' becomes 'go' (journey means to go or travel).
'up' is a reversal indicator (in down clue: letters go upwards).
'parisian street' becomes 'rue' ('street' in French).
'is entertaining' means one lot of letters goes inside another.
'go' backwards is 'og'.
'og' put inside 'rue' is 'ROGUE'.
Can you help me to learn more?
(Other definitions for rogue that I've seen before include "Scally" , "Wild animal living apart from herd, say elephant" , "Baddy" , "Prankster" , "Scoundrel, knave" .)