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From *perior, from Proto-Indo-European *per-.



experior (present infinitive experīrī, perfect active expertus sum); fourth conjugation, deponent

  1. I test, put to the test.
  2. I try, attempt, prove.
    • 100 BCE – 44 BCE, Julius Caesar, Commentarii de Bello Gallico 1.44:
      Si iterum experiri velint, se iterum paratum esse decertare; si pace uti velint, iniquum esse de stipendio recusare, quod sua voluntate ad id tempus pependerint.
      If they chose to make a second trial, he was ready to encounter them again; but if they chose to enjoy peace, it was unfair to refuse the tribute, which of their own free-will they had paid up to that time.
  3. I find out.
  4. I experience.
  5. I do.


   Conjugation of experior (fourth conjugation, deponent)
indicative singular plural
first second third first second third
active present experior experīris, experīre experītur experīmur experīminī experiuntur
imperfect experiēbar experiēbāris, experiēbāre experiēbātur experiēbāmur experiēbāminī experiēbantur
future experiar experiēris, experiēre experiētur experiēmur experiēminī experientur
perfect expertus + present active indicative of sum
pluperfect expertus + imperfect active indicative of sum
future perfect expertus + future active indicative of sum
subjunctive singular plural
first second third first second third
active present experiar experiāris, experiāre experiātur experiāmur experiāminī experiantur
imperfect experīrer experīrēris, experīrēre experīrētur experīrēmur experīrēminī experīrentur
perfect expertus + present active subjunctive of sum
pluperfect expertus + imperfect active subjunctive of sum
imperative singular plural
first second third first second third
active present experīre experīminī
future experītor experītor experiuntor
non-finite forms active passive
present perfect future present perfect future
infinitives experīrī, experīrier1 expertus esse expertūrus esse
participles experiēns expertus expertūrus experiendus
verbal nouns gerund supine
nominative genitive dative/ablative accusative accusative ablative
experīrī, experīrier1 experiendī experiendō experiendum expertum expertū

1The present passive infinitive in -ier is a rare poetic form which is attested for this verb.

Derived termsEdit

Related termsEdit