Definitions

1. adjective

relating to or characteristic of the French novelist Marcel Proust, especially in a nostalgic or introspective sense

“The Proustian reminiscences in the old photograph brought back a flood of memories.”

2. noun

a person who is introspective or nostalgic in a manner reminiscent of Proust

“He’s a bit of a Proustian, always lost in thought and reminiscing about the past.”