ageless
long-standing
longstanding
centuried
longeval
millenarian
impermanent
temporary
irreformably
unrepentable
yeared
age-old
unrecallably
unregenerable
unretractable
unstayable
epochless
forever
unregainable
indefinitely
longevously
unreclaimably
superdormant
undestroyable
indestructible
semipermanent
unreformable
durable
old
eon
perdurable
nonrenewable
Struldbrug
ahistoricity
obsoletion
unaging
irreversible
long-established
unsurviving
subobsolete
unarchivable
shortgevity
temporal
unreconstructible
decadeslong
you can't go home again
uneternal
immarcescible
unrevivable
unmemorializable
noneternal
nonrevivable
ancient
irrepealable
macrobiotic
time out of mind
long-livedness
unmarriageable
immemorable
everlasting
decades young
unmodernizable
old as time
foreverhood
eternal
borrowed time
unretainable
nonpreservation
undecaying
sempiternal
defunctness
unrecapturable
unemancipable
extinction
protracted
unelidable
yesterday is gone
silver age
didine
nonerasable
unrenewable
age
unretrievable
irrevocable
superold
unrememberable
perpetual
deciduous
ungraspable
mists of time
unrevisable
macrobian
unworshipable
old as the hills
unrestorably
long-lasting

English words for 'Having existed for so great a period of time that its longevity cannot be expressed.'

As you may have noticed, above you will find words for "Having existed for so great a period of time that its longevity cannot be expressed.". Hover the mouse over the word you'd like to know more about to view its definition. Click search related words by phrase or description. to find a better fitting word. Finally, thanks to ChatGPT, the overall results have been greatly improved.

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