The phrase "forgotten memories" is grammatically correct and can be used in written English.
It is typically used to describe memories that have been lost or faded over time. Example: As I walked through the old abandoned house, I couldn't help but feel a rush of forgotten memories flood my mind.
At a waterfall, the fragrances of mosses and columbine enveloped him, evoking forgotten memories.
Longer-term activation of forgotten memories was induced by stimulating new connections between the hippocampus and entorhinal cortex brain regions.
And yet fragrance, more intimate than lingerie, must also express my inner core, awaken forgotten memories, call up a submerged aspect of self.
(James Surowiecki, The New Yorker) E. Cheryl's mind turned like the vanes of a wind-powered turbine, chopping her sparrow-like thoughts into bloody pieces that fell onto a growing pile of forgotten memories.
Filled with remorse at his forgotten memories, he calls himself "chullachaqui" – meaning an empty man-shaped ghost – and begs Evan, as his American companion is called in the film, to guide him through his own jungle.
But why do smells have this power to unlock forgotten memories?
Thanks for putting a name on a forgotten memory.
I am unable to dissociate one from the other; they are bound together like a fragrance to an almost forgotten memory.
In view of its occurrence among organically healthy individuals, déjà vu commonly has been regarded as psychogenic and as having its origin in some partly forgotten memory, fantasy, or dream.
The Mets have sporadically done a good job of the latter, most recently in 2000, but they have encountered such deep potholes since then that the 2000 World Series is a distant, almost forgotten, memory.
The February 2007 IPO of Firstsource, which saw the issue being oversubscribed nearly 50 times, is a forgotten memory.
