Go back in time, generally reflecting (6)
I believe the answer is:
renege
'go back' is the definition.
'renege' can be an answer for 'back' (thesaurus). I am not sure about the 'go' bit.
'in time generally reflecting' is the wordplay.
'in' indicates the answer is hidden within the clue.
'reflecting' is a reversal indicator.
'egener' is hidden in the letters of 'time generally'.
'egener' back-to-front is 'RENEGE'.
Can you help me to learn more?
(Other definitions for renege that I've seen before include "Fail to carry out a commitment" , "Fail to keep promise, or revoke in cards" , "Default" , "Fail to honour an obligation" , "South American cowboy" .)