In trouble is repeatedly after credit (6)
I believe the answer is:
crisis
'in trouble' is the definition.
(I've seen this before)
'is repeatedly after credit' is the wordplay.
'repeatedly' says to double the letters.
'after' says to put letters next to each other.
'credit' becomes 'cr' (abbreviation).
'is' duplicated is 'isis'.
'isis' after 'cr' is 'CRISIS'.
(Other definitions for crisis that I've seen before include "crucial period" , "Emergency (in midlife?)" , "A decisive or dangerous time" , "unstable period" , "Critical point" .)