A cheat implies trouble (3)
I believe the answer is:
ado
'trouble' is the definition.
(both can mean bother or commotion)
'a cheat implies' is the wordplay.
I cannot really understand how this works, but
'a' is within the answer.
'cheat' could be 'do' and 'do' is found within the answer.
This accounts for all the letters.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for ado that I've seen before include "excitement" , "agitation" , "puff ball!" , "Busy activity, trouble" , "flapping" .)