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See also: hi'o and hiʻo




  1. Indicative present connegative form of hioa.
  2. Second person singular imperative present form of hioa.
  3. Second person singular imperative present connegative form of hioa.





  1. rōmaji reading of ひお



From Proto-Italic *hiāō, from Proto-Indo-European *ǵʰh₁i-eh₂- ‎(to gape, be wide open). Cognates include Ancient Greek χάσκω ‎(kháskō), Tocharian A śew, Tocharian B kāyā, Lithuanian žioti, Russian зия́ть ‎(zijátʹ), Sanskrit विजिहीते ‎(vijihīte), and Proto-Germanic *gīnaną, *ganōną (English yawn)[1]



hiō ‎(present infinitive hiāre, perfect active hiāvī); first conjugation, no passive

  1. I yawn, gape.
  2. I stand open.
  3. (of speech) I pause, connect badly.
  4. (figuratively) I am amazed, gape in wonder.
  5. I bawl out, utter, sing.


   Conjugation of hio (first conjugation, active only)
indicative singular plural
first second third first second third
active present hiō hiās hiat hiāmus hiātis hiant
imperfect hiābam hiābās hiābat hiābāmus hiābātis hiābant
future hiābō hiābis hiābit hiābimus hiābitis hiābunt
perfect hiāvī hiāvistī hiāvit hiāvimus hiāvistis hiāvērunt, hiāvēre
pluperfect hiāveram hiāverās hiāverat hiāverāmus hiāverātis hiāverant
future perfect hiāverō hiāveris hiāverit hiāverimus hiāveritis hiāverint
subjunctive singular plural
first second third first second third
active present hiem hiēs hiet hiēmus hiētis hient
imperfect hiārem hiārēs hiāret hiārēmus hiārētis hiārent
perfect hiāverim hiāverīs hiāverit hiāverīmus hiāverītis hiāverint
pluperfect hiāvissem hiāvissēs hiāvisset hiāvissēmus hiāvissētis hiāvissent
imperative singular plural
first second third first second third
active present hiā hiāte
future hiātō hiātō hiātōte hiantō
non-finite forms active passive
present perfect future present perfect future
infinitives hiāre hiāvisse
participles hiāns
verbal nouns gerund supine
nominative genitive dative/ablative accusative accusative ablative
hiāre hiandī hiandō hiandum

Derived terms[edit]


  • hio” in Charlton T. Lewis & Charles Short, A Latin Dictionary, Oxford: Clarendon Press, 1879.
  1. ^ De Vaan, Michiel (2008) Etymological Dictionary of Latin and the other Italic Languages (Leiden Indo-European Etymological Dictionary Series; 7), Leiden, Boston: Brill