One in Paris joining others in disturbance (6)
I believe the answer is:
unrest
'disturbance' is the definition.
(I've seen this before)
'one in paris joining others' is the wordplay.
'one in paris' becomes 'un'.
'joining' is a charade indicator (letters next to each other).
'others' becomes 'rest' (I've seen this before).
'un'+'rest'='UNREST'
'in' is the link.
(Other definitions for unrest that I've seen before include "'Discontent, anxiety (6)'" , "Disorder" , "Trouble" , "State of turbulence" , "Disquiet; disturbance" .)