nostalgia
nɒˈstaldʒə/
noun
noun: nostalgia; plural noun: nostalgias
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a sentimental longing or wistful affection for a period in the past.“I was overcome with acute nostalgia for my days at university”
synonyms: wistfulness, longing/yearning/pining for the past, regret, regretfulness,reminiscence, remembrance,recollection, homesickness,sentimentality “there is a nostalgia for traditional values”-
something done or presented in order to evoke feelings of nostalgia.“an evening of TV nostalgia”
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Origin
late 18th century (in the sense ‘acute homesickness’): modern Latin (translating German Heimweh‘homesickness’), from Greek nostos ‘return home’ +algos ‘pain’.
How my heart sings 