Account for former spouse who's not attractive? (7)
I believe the answer is:
explain
'account for' is the definition.
(I've seen this before)
'former spouse who's not attractive?' is the wordplay.
I cannot really see how this works, but
'former' could be 'ex' (prefix meaning former or onetime) and 'ex' is located in the answer.
'not attractive?' could be 'plain' (I've seen this before) and 'plain' 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 explain that I've seen before include "Elucidate - define" , "Spell out" , "Elucidate, clarify" , "Interpret" , "Make (something) clear" .)