Insinuated that troublemaker was dishonest (7)
I believe the answer is:
implied
'insinuated' is the definition.
(I've seen this before)
'troublemaker was dishonest' is the wordplay.
'troublemaker' becomes 'imp' (little devil).
'was dishonest' becomes 'lied' (lying is being dishonest).
'imp'+'lied'='IMPLIED'
'that' acts as a link.
(Other definitions for implied that I've seen before include "State indirectly" , "Indicated by suggestion" , "Stated indirectly" , "Tacit" , "Unspoken" .)