Lesson 4 – Future perfect tense

The future perfect past tense is used to describe an action that will already be complete in the future before a definite time.

For example:

‘I won’t get home until 20:00 now, by which time the film will have finished.’

All four conjugations form the future perfect tense in the same way and use the following endings.

Latin English
-ero I
-eris you (singular)
-erit he/she/it
-erimus we
-eritis you (plural)
-erint they

To form the future perfect of a verb, remove the ‘-i’ from the third principal part of the verb and add the relevant ending above.

For example:

confirmo, confirmare, confirmavi, confirmatum (1) to confirm.

Latin English
confirmavero I will have confirmed
confirmaveris you will have confirmed
confirmaverit he/she/it will have confirmed
confirmaverimus we will have confirmed
confirmaveritis you will have confirmed
confirmaverint they will have confirmed

Future perfect tense of sum, esse, fui, – ‘to be’

Latin English
fuero I will have been
fueris you will have been
fuerit he/she/it will have been
fuerimus we will have been
fueritis you will have been
fuerint they will have been


The future perfect is often used at the beginning of charters and deeds to describe a time in the future when the document will be read.

For example:
Omnibus ad quos hec presens carta pervenerit
To all to whom this present charter will have come.

It is also frequently found in wills to describe the intention of leaving property or money to someone else in the case that the original inheritor is no longer living when the testator dies.

For example:

[Et si]…predicta Lucia obierit absque heredibus tunc volo et concedo predictum messuagium Fidei
And if the aforesaid Lucy will have died without heirs, then I will and grant the aforesaid messuage to Faith.


Are you confident with

  • the meaning of a future perfect tense?
  • the form of a future perfect tense?
  • where you might come across the future perfect tense in documents?

What next?