Having a vague feeling of regretful longing (7)

I believe the answer is:

wistful

(Other definitions for wistful that I've seen before include "Melancholy" , "Regretfully longing" , "(Of a smile) showing vague or regretful longing" , "Disconsolate" , "Sadly pensive" .)

I've seen this clue in the Sydney Morning Herald.

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