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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.
    • 426 CE, Aurelius Augustinus Hipponensis, City of God 12.1
      Sicut ergo, cum uitium oculorum dicitur caecitas, id ostenditur, quod ad naturam oculorum pertinet uisus; et cum uitium aurium dicitur surditas, ad earum naturam pertinere demonstratur auditus: ita, cum uitium creaturae angelicae dicitur, quo non adhaeret Deo, hinc apertissime declaratur, eius naturae ut Deo adhaereat conuenire.
      As, then, when we say that blindness is a defect of the eyes, we prove that sight belongs to the nature of the eyes; and when we say that deafness is a defect of the ears, hearing is thereby proved to belong to their nature;—so, when we say that it is a fault of the angelic creature that it does not cleave to God, we hereby most plainly declare that it pertained to its nature to cleave to God.


   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
verbal nouns gerund supine
nominative genitive dative/ablative accusative accusative ablative
ostendere ostendendī ostendendō ostendendum ostentum ostentū

Derived terms[edit]


  • ostendo in Charlton T. Lewis and Charles Short (1879) A Latin Dictionary, Oxford: Clarendon Press
  • ostendo in Charlton T. Lewis (1891) An Elementary Latin Dictionary, New York: Harper & Brothers
  • ostendo in Gaffiot, Félix (1934) Dictionnaire Illustré Latin-Français, Hachette
  • Carl Meissner; Henry William Auden (1894) Latin Phrase-Book[1], London: Macmillan and Co.
    • he is a young man of great promise: adulescens alios bene de se sperare iubet, bonam spem ostendit or alii de adulescente bene sperare possunt
    • to demonstrate by instances: aliquid exemplis ostendere
    • to rouse a vain, groundless hope in some one's mind: spem falsam alicui ostendere
  • ostend in The Century Dictionary, The Century Co., New York, 1911