Seen unhappily in tears, a complete state (8)
I believe the answer is:
Here is my best explanation:
'a complete state' is the definition.
(state of completion)
'seen unhappily in tears' is the wordplay.
'unhappily' indicates anagramming the letters.
'in' is an insertion indicator.
'tears' becomes 'rips' (rip is a kind of tear**).
'seen' anagrammed gives 'enes'.
'enes' put within 'rips' is 'RIPENESS'.
(Other definitions for ripeness that I've seen before include "Maturity", "Mature stage" and "Ready-to-eat stage".)