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From obs- for ob (before) + tendō (I stretch).



ostendō (present infinitive ostendere, perfect active ostendī, supine ostentum); third conjugation

  1. I expose to view, exhibit, show.


  • The supine form also appears as ostensum.
Conjugation of ostendo (third conjugation)
indicative singular plural
first second third first second third
active present ostendō ostendis ostendit ostendimus ostenditis ostendunt
imperfect ostendēbam ostendēbās ostendēbat ostendēbāmus ostendēbātis ostendēbant
future ostendam ostendēs ostendet ostendēmus ostendētis ostendent
perfect ostendī ostendistī ostendit ostendimus ostendistis ostendērunt, ostendēre
pluperfect ostenderam ostenderās ostenderat ostenderāmus ostenderātis ostenderant
future perfect ostenderō ostenderis ostenderit ostenderimus ostenderitis ostenderint
passive present ostendor ostenderis, ostendere ostenditur ostendimur ostendiminī ostenduntur
imperfect ostendēbar ostendēbāris, ostendēbāre ostendēbātur ostendēbāmur ostendēbāminī ostendēbantur
future ostendar ostendēris, ostendēre ostendētur ostendēmur ostendēminī ostendentur
perfect ostentus + present active indicative of sum
pluperfect ostentus + imperfect active indicative of sum
future perfect ostentus + future active indicative of sum
subjunctive singular plural
first second third first second third
active present ostendam ostendās ostendat ostendāmus ostendātis ostendant
imperfect ostenderem ostenderēs ostenderet ostenderēmus ostenderētis ostenderent
perfect ostenderim ostenderīs ostenderit ostenderīmus ostenderītis ostenderint
pluperfect ostendissem ostendissēs ostendisset ostendissēmus ostendissētis ostendissent
passive present ostendar ostendāris, ostendāre ostendātur ostendāmur ostendāminī ostendantur
imperfect ostenderer ostenderēris, ostenderēre ostenderētur ostenderēmur ostenderēminī ostenderentur
perfect ostentus + present active subjunctive of sum
pluperfect ostentus + imperfect active subjunctive of sum
imperative singular plural
first second third first second third
active present ostende ostendite
future ostenditō ostenditō ostenditōte ostenduntō
passive present ostendere ostendiminī
future ostenditor ostenditor ostenduntor
non-finite forms active passive
present perfect future present perfect future
infinitives ostendere ostendisse ostentūrus esse ostendī ostentus esse ostentum īrī
participles ostendēns ostentūrus ostentus ostendendus


  • ostendo” in Charlton T. Lewis & Charles Short, A Latin Dictionary, Oxford: Clarendon Press, 1879.
  • ostend in The Century Dictionary, The Century Co., New York, 1911