Crossword Genius

Forgetfulness is a mean condition (7)

Ross

I believe the answer is:

amnesia

'forgetfulness' is the definition.
(I've seen this before)

'is a mean condition' is the wordplay.
'condition' indicates an anagram (I've seen 'conditions' mean this (letters must be in a new condition)).
'is'+'a'+'mean'='isamean'
'isamean' with letters rearranged gives 'AMNESIA'.

(Other definitions for amnesia that I've seen before include "Clinical loss of memory" , "memory problem" , "Defect in memory" , "Main sea (anag.)" , "As a mine (anag)" .)

I've seen this clue in The Mirror.
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