nostalgic

Etymology

From nostalgia + -ic.

adj

1. Of, having, or relating to nostalgia.
   And here, as I write, the faint, scarcely perceptible, ghost-like suspicion of a scent—a mere nostalgic fancy, compound, generic, synthetic and all-embracing—an abstract olfactory symbol of the "Tout Paris" of fifty years ago, comes back to me out of the past; and fain would I inhale it in all its pristine fulness and vigour. 1891, George Du Maurier, Peter Ibbetson
   An opening sequence, featuring a de-aged Ford playing a younger Indy, is a bold and nostalgic gambit, offering a glimpse of what you've missed. 29 June 2023, City AM, London, page 18, column 2

noun

1. A person who displays nostalgia for something.
   But of course every well-brought-up person to-day knows that the Victorians were sentimentalists, nostalgics, escapists, self-deceivers. 1933 January, Gilbert Armitage, “Were these Victorians?”, in The Bookman, volume LXXXIII, number 496
   In Bow Street court next morning, the slapper proved to be a paid agent of a group of nostalgics who call themselves The League of Empire Loyalists. August 19, 1957, Time, page 17
   FA Cup Centenary 1872-1972. One for the football nostalgics. February 28, 2009, Steven Morris, “Brought to books: bibliophiles and traders enjoy giveaway bonanza”, in The Guardian