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From Proto-Italic *takēō, possibly from Proto-Indo-European *tak- or *tHk-. Akin to Gothic 𐌸𐌰𐌷𐌰𐌽 (þahan), Old Norse þegja (Danish tie and Icelandic þegja), Old High German dagen.



taceō (present infinitive tacēre, perfect active tacuī, supine tacitum); second conjugation

  1. (intransitive) to be silent, say nothing, shut up, hold one's tongue
    Synonyms: sileō, conticēscō
    Aut tacē aut face.
    Either shut up or do [it].
  2. (intransitive) to be still or at rest
    Synonyms: conquiēscō, conticēscō, sileō, cessō
  3. (transitive) to leave unsaid, keep quiet, pass over or omit in silence, make no mention of
    Synonyms: sileō, conticēscō
    • c. 52 BCE, Julius Caesar, Commentarii de Bello Gallico 1.17:
      Tum demum Liscus oratione Caesaris adductus quod antea tacuerat proponit.
      Then at length Liscus, moved by Caesar’s speech, discloses what he had hitherto kept secret.
    • 43 BCEc. 17 CE, Ovid, Ibis 9–10:
      Quisquis is est—nam nōmen adhūc utcumque tacēbō
          cōgit inassuētās sūmere tēla manūs.
      Whoever he is, for the name I am still going to omit,
          he forces my unaccustomed hands to take weapons.


   Conjugation of taceō (second conjugation)
indicative singular plural
first second third first second third
active present taceō tacēs tacet tacēmus tacētis tacent
imperfect tacēbam tacēbās tacēbat tacēbāmus tacēbātis tacēbant
future tacēbō tacēbis tacēbit tacēbimus tacēbitis tacēbunt
perfect tacuī tacuistī tacuit tacuimus tacuistis tacuērunt,
pluperfect tacueram tacuerās tacuerat tacuerāmus tacuerātis tacuerant
future perfect tacuerō tacueris tacuerit tacuerimus tacueritis tacuerint
passive present taceor tacēris,
tacētur tacēmur tacēminī tacentur
imperfect tacēbar tacēbāris,
tacēbātur tacēbāmur tacēbāminī tacēbantur
future tacēbor tacēberis,
tacēbitur tacēbimur tacēbiminī tacēbuntur
perfect tacitus + present active indicative of sum
pluperfect tacitus + imperfect active indicative of sum
future perfect tacitus + future active indicative of sum
subjunctive singular plural
first second third first second third
active present taceam taceās taceat taceāmus taceātis taceant
imperfect tacērem tacērēs tacēret tacērēmus tacērētis tacērent
perfect tacuerim tacuerīs tacuerit tacuerīmus tacuerītis tacuerint
pluperfect tacuissem tacuissēs tacuisset tacuissēmus tacuissētis tacuissent
passive present tacear taceāris,
taceātur taceāmur taceāminī taceantur
imperfect tacērer tacērēris,
tacērētur tacērēmur tacērēminī tacērentur
perfect tacitus + present active subjunctive of sum
pluperfect tacitus + imperfect active subjunctive of sum
imperative singular plural
first second third first second third
active present tacē tacēte
future tacētō tacētō tacētōte tacentō
passive present tacēre tacēminī
future tacētor tacētor tacentor
non-finite forms active passive
present perfect future present perfect future
infinitives tacēre tacuisse tacitūrum esse tacērī tacitum esse tacitum īrī
participles tacēns tacitūrus tacitus tacendus
verbal nouns gerund supine
genitive dative accusative ablative accusative ablative
tacendī tacendō tacendum tacendō tacitum tacitū

Derived terms[edit]

Related terms[edit]



  • taceo”, in Charlton T. Lewis and Charles Short (1879) A Latin Dictionary, Oxford: Clarendon Press
  • taceo”, in Charlton T. Lewis (1891) An Elementary Latin Dictionary, New York: Harper & Brothers
  • taceo in Gaffiot, Félix (1934) Dictionnaire illustré latin-français, Hachette