In some roles I'm performing, smile ingratiatingly (6)
I believe the answer is:
simper
'smile ingratiatingly' is the definition.
(I've seen this before)
'in some roles i'm performing' is the wordplay.
'in' indicates the answer is hidden within the clue.
'SIMPER' can be found hidden inside 'some roles im performing'.
(Other definitions for simper that I've seen before include "Smile in a silly way" , "Smirk" , "Primes to smile in affected way" , "Silly self-conscious smile" , "affect a smile" .)