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in perpetuity

in perpetuity

16 7.8
A time that lasts forever
  • idiom
  • /ɪn pɜːrˈpɛtʃuːɪti/
  • Formal
translation icon : en perpetuidad
  • The museum decided to keep the artwork on display in perpetuity so that future generations could enjoy it.
  • preserve in perpetuity
  • land in perpetuity

And if we're just friends in perpetuity, then great, I've made a new friend.

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Examples

  • Unless some of this debt is forgiven, they will be paying in perpetuity.

    Academic text (2001)
  • The leasing plan was to create a permanent fund that would support the Haudenosaunee in perpetuity.

    Academic text (2009)
  • But holding on to those things in perpetuity seems like the least ideal way to have a collection that you appreciate.

  • I love you in perpetuity.

  • Free annual cancer screening will be made available in perpetuity for all such residents.

    Academic text (2006)
  • The Trust will ensure the gardens in perpetuity and you will have a yearly income and control of the gardens.

  • And if we're just friends in perpetuity, then great, I've made a new friend.

  • Once purchased, these lands were to be held in trusteeship in perpetuity for the Jewish nation.

    Academic text (1996)
  • The Butler Center will maintain the Encyclopedia in perpetuity following the end of our grant-funded development phase.

    Academic text (2009)
  • The three Jamaican free zones provide their corporate occupants with tax-free and duty-free concessions in perpetuity.

    Academic text (1998)

Synonyms

permanently
vsin perpetuity
218 2.9

Stays the same for all time

is a broader label for unlimited duration not implying intention to remain unchanged
indefinitely
vsin perpetuity
104 4.8

For a time with no set end

is the absolute never-ending sense rather than merely unspecified timeframe
endlessly
vsin perpetuity
73 2.3

Without stopping for a very long time

is focused on duration rather than the continuous manner of occurrence
eternally
vsin perpetuity
53 5.2

For all time without end

is less focused on absolute timelessness and names general unlimited duration
perpetually
vsin perpetuity
29 4.8

Happening all the time without stopping

is the general label for unlimited time rather than repeated continuous action
forever
vsin perpetuity
12 1.4

A very long time with no end

is the neutral term for unlimited duration rather than emotional emphasis
forevermore
vsin perpetuity
  • Archaic
8 6.8

Always from now on

is the general term for unlimited duration without specific starting emphasis
evermore
vsin perpetuity
  • Archaic
3 8.9

Continues for all future time

is the ordinary neutral phrase for unlimited duration rather than poetic use
interminably
vsin perpetuity
2 7.6

In a way that goes on for a very long time with no end in sight

is the neutral phrase for unlimited time not focused on seeming duration
enduringly
vsin perpetuity
1 5.6

Continuing to exist or have effect for a long time

is the strict unlimited duration, not only long-lasting existence
everlastingly
vsin perpetuity
1 7.4

In a way that lasts forever

is the neutral expression indicating unlimited duration rather than stylistic emphasis
unendingly
vsin perpetuity
1 5.8

Without stopping for a long time

is the broader concept of unlimited time, not only nonstop action
unto the ages of ages
vsin perpetuity
  • Archaic
9.9

For a very long time that never ends

is the neutral phrase for unlimited time without solemn commitment
forever and a day
vsin perpetuity
  • Archaic
5.6

For a very long time with no clear end

is the neutral, literal label for unlimited time rather than hyperbolic speech
until kingdom come
vsin perpetuity
  • Informal
8.6

For a very long time, possibly forever

is a general, non-colloquial statement of unlimited duration rather than slang

Antonyms

414 1.0

For a short time or in a few words

222 3.2

For a short time and not permanent

How Long

in perpetuity
  • Formal
16 7.8
permanently
218 2.9
temporarily
222 3.2
for a while
1.0
briefly
414 1.0

Surface Forms

in perpetuity positive

Morphology

in + perpetuity

The meaning is directly compositional: 'in' (within/for) combined with 'perpetuity' (lasting indefinitely) straightforwardly gives 'for an endless period/forever.' Although the phrase is somewhat formal/legal, its logic is transparent and cross‑linguistically common, so a B1 learner who knows both constituents would understand it.

Etymology

In perpetuity comes from old legal documents and the Latin word perpetuus, which means 'never ending'. So saying something is kept in perpetuity gives the picture of it lasting 'without end', which is why it means 'forever'.