Synonyms and antonyms of Existing or continuing for a long time in American Thesaurus

long (adjective)

lasting for a large amount of time

long-term (adjective)

continuing to exist, be relevant, or have an effect for a long time in the future

lasting (adjective)

continuing to exist or have an effect for a long time

extended (adjective)

continuing for longer than usual

prolonged (adjective)

continuing for a long time

enduring (adjective)

lasting for a long time

never-ending (adjective)

continuing for a very long time and likely to continue even longer

for some time ()

for a long period of time

on and on ()

continuing for a long time

constant (adjective)

continuous or regular over a long period of time

ageless (adjective)

something that is ageless has existed for a very long time and continues to exist

at (great/some) length ()

for a long time and with a lot of detail

away (adverb)

used for showing that someone does something continuously or for a long time

continued (adjective)

provided, happening, or done regularly or for a long period

double (adjective)

lasting twice as long as normal

durable (adjective)

continuing to exist or work for a long time, even if the situation changes

eternal (adjective)

continuing forever or for a very long time

eternally (adverb)

forever, or for a very long time

eternally (adverb)

used for emphasizing that something will continue for a very long time

everlasting (adjective)

continuing for a very long time

for long ()

for a long period of time

for the foreseeable future ()

for as far in the future as can be determined, based on what is known now

from cradle to grave ()

through your whole life

from/since time immemorial (literary)

literary for an extremely long time

future-proof (adjective)

something that is future-proof will continue to be used because it will not easily be replaced by something newer and more effective

here to stay ()

if something is here to stay, it will continue to exist for a long time and become accepted as normal

in a coon’s age ()

in a very long time

long (adverb)

for a long period of time

long-lasting (adjective)

continuing for a long time

long-lived (adjective)

living or lasting for a long time

long-range (adjective)

continuing or looking far into the future

long-running (adjective)

having continued for a long time

long-standing (adjective)

having existed for a long time

long-time (adjective)

having continued or existed as a particular thing for a long time

medium-term (adjective)

within the period of time that begins at the present time and lasts a few months or years

more/longer etc. than someone cares to /remember/admit/mention ()

used for saying that something has been happening for a long time or very much

of many/five/ten etc. years’ standing ()

used for saying how long something has been happening

over the long haul ()

over a long period of time

since/from the year dot ()

since a very long time ago

slow (adjective)

taking a long time

steady (adjective)

reliable and continuing for a long period of time

sustained (adjective)

continuing at the same level or rate for a long time

till/until Doomsday ()

for a very long time

till/until the cows come home ()

for a very long time

to/until the end of time ()

for a very long time

to/until/till the bitter end ()

continuing until the end of a particular situation or period of time, even though it is difficult or unpleasant

well (adverb)

used for emphasizing that a period of time or a distance is long