nostalgia

Nostalgia is a sentimental longing or wistful affection for the past, typically for a period or place with happy personal associations. Imagine it as a gentle, bittersweet ache in your chest when you look at an old childhood photograph or hear a song that transports you back to a simpler, warmer time in your life. While it was once considered a medical condition involving intense homesickness, it is now used to describe the universal human tendency to look back on memories through "rose-colored glasses." It is often used to describe marketing trends, such as the revival of 90s fashion or retro video games, which capitalize on this collective desire to revisit the past.
In conversation
Reminiscing with a friend
Looking at these old high school photos makes me feel so nostalgic.
Looking at these old high school photos makes me feel so nostalgic.
I know, right? We had no idea how easy we had it back then.
I know, right? We had no idea how easy we had it back then.
Used to describe a shared feeling of longing for a past period.
Discussing a movie remake
Do you think the new version of that show is any good?
Do you think the new version of that show is any good?
It’s just pure nostalgia bait; it doesn't really offer anything new.
It’s just pure nostalgia bait; it doesn't really offer anything new.
'Nostalgia bait' is a common modern term for media that relies on familiarity to attract viewers.
Examples
She felt a wave of nostalgia when she smelled the cookies.
She felt a wave of nostalgia when she smelled the cookies.
The band’s reunion tour was fueled by pure nostalgia for their golden era.
The band’s reunion tour was fueled by pure nostalgia for their golden era.
His writing is permeated with a poignant nostalgia for a home that no longer exists.
His writing is permeated with a poignant nostalgia for a home that no longer exists.