Crossword Genius

Sentimental feeling unfortunately lost again (9)

Ross

I believe the answer is:

nostalgia

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

'unfortunately lost again' is the wordplay.
'unfortunately' is an anagram indicator (a bad or unfortunate spelling).
'lost'+'again'='lostagain'
'lostagain' with letters rearranged gives 'NOSTALGIA'.

(Other definitions for nostalgia that I've seen before include "Sense of past perfect" , "That may bring on homesickness" , "Longing for something past - isn't a goal (anag)" , "Fond remembrance" , "Love for the past" .)

I've seen this clue in The Sun and The Telegraph.
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