Conjugate Verbs


  • Language: Interlingua
  • Created: 1951
  • Alternate names:
  • Language code:
  • Language family: Conlang
  • Script: Latin script


Interlingua is an international auxiliary language (IAL) published in 1951 by the International Auxiliary Language Association (IALA). It is the most widely used naturalistic auxiliary language. Interlingua was developed to combine a very simple grammar with a vocabulary consisting of words that are common to the widest possible range of languages. Interlingua is unusual for being immediately understandable to populations numbering in the hundreds of millions. Conversely, it can be – and is – used as an introduction to similar natural languages.

The verb


Roughly like Spanish or Italian. The stress is on the vowel before the last consonant, except in the future tense where it is on the final -a, and in the conditional tense where it is on the -e- in the final -ea.

Sample verb: parlar

Present participleparlante
Past participleparlate
Perfectha parlate
Pluperfecthabeva parlate
Future perfecthabera parlate

Sample verbs

Irregular verbs

There are 3 verbs in Interlingua that have irregular forms: esser 'to be', haber 'to have', and vader 'to go'.

Irregular forms are marked in red. Collateral forms are marked in gray.

Present participleessentehabentevadente
Past participleessitehabitevadite
Presentes; Plural sonhava
Pastesseva; erahabevavadeva
Futureessera; serahaberavadera
Perfectha essiteha habiteha vadite
Pluperfecthabeva essitehabeva habitehabeva vadite
Future perfecthabera essitehabera habitehabera vadite
Conditionalesserea; sereahabereavaderea

More information