nostalgia
noun /nɒˈstældʒə/
  /nəˈstældʒə/,  /nɑːˈstældʒə/
[uncountable]- a sad feeling mixed with pleasure when you think of happy times in the past
- a sense/wave/pang of nostalgia
 - She is filled with nostalgia for her own college days.
 
Extra Examples- He thought back to his time as a student and felt no nostalgia for any of it.
 - I remember it with great nostalgia.
 - Nostalgia buffs gathered for the auction of wartime memorabilia.
 - She felt great nostalgia for the old way of life.
 - She remembers her life as a singer with a certain wistful nostalgia.
 - The college reunion was a great nostalgia trip.
 - an evening of pure nostalgia
 
Oxford Collocations Dictionaryadjective- wistful
 - pure
 - 80s
 - …
 
- wave
 
- feel
 - evoke
 - indulge in
 - …
 
- buff
 - trip
 
- with nostalgia
 - nostalgia for
 
- a feeling of nostalgia
 - a sense of nostalgia
 
Word Originlate 18th cent. (in the sense ‘acute homesickness’): modern Latin (translating German Heimweh ‘homesickness’), from Greek nostos ‘return home’ + algos ‘pain’.