missing in time
lost in time
away with the fairies
paleologism
too far gone
ab aeterno
oftentime
forgotten
go astray
tempus fugit
gonesome
desiderate
mists of time
olden
back in the day
long ago
prehistory
yoretime
retronymously
rediscover
go walkabout
long long ago
transient
past
grandfather paradox
good old days
preterit
preterite
look back
agone
ago
lose one's way
early
closed time loop
in retrospect
other
ancient
butterfly effect
former
yestertide
for old sake's sake
temporal
foretime
four score and seven years ago
obsoletism
lose
yestertime
past imperfect tense
by-past
farblondjet
present
you can't go home again
pastward
future tense
pastwards
over the river and through the woods
yesteryear
drop out
beyond
semantic shift
long-ago
long memory
bygones
allohistory
vanishing point
miss out
alternative history
back then
untime
take a walk
at the time
disappear
old time
yesterday
primitive
yearn
long since
subjective time
defamiliarize
memory
God be with the days
go
go missing
trash heap of history
up the boohai
lethe
backcast
slow
might've
ancient history
deep
retrovision
send back
misplaced
transtemporal
days of yore