Definition from Wiktionary, the free dictionary
Jump to: navigation, search



From Proto-Italic *jakēō. Stative counterpart of iacio ‎(to throw). The meaning must have shifted from “I am thrown down” to “I lie”.

Alternative forms[edit]



iaceō ‎(present infinitive iacēre, perfect active iacuī, supine iacitum); second conjugation

  1. I lie prostrate, lie down; recline.
    Cur in terra iaces? — “Why are you lying on the ground?”
  2. I am sick, lie ill.
  3. I linger, stop, tarry, remain.
  4. I am placed or situated, lie.
  5. I am low, flat or level.
  6. I lie still.
  7. I have fallen, lie dead.
  8. I lie in ruins.
  9. I hang down loose.
  10. (of the face or eyes) I am fixed on the ground or cast down.
  11. I am indolent, idle or inactive.
  12. I am of no avail, lie dormant or abandoned.
  13. I lie overthrown; I am refuted, fail; I am despised.
  14. (of speech or language) I am languid, dull or lifeless.


   Conjugation of iaceo (second conjugation, active only)
indicative singular plural
first second third first second third
active present iaceō iacēs iacet iacēmus iacētis iacent
imperfect iacēbam iacēbās iacēbat iacēbāmus iacēbātis iacēbant
future iacēbō iacēbis iacēbit iacēbimus iacēbitis iacēbunt
perfect iacuī iacuistī iacuit iacuimus iacuistis iacuērunt, iacuēre
pluperfect iacueram iacuerās iacuerat iacuerāmus iacuerātis iacuerant
future perfect iacuerō iacueris iacuerit iacuerimus iacueritis iacuerint
subjunctive singular plural
first second third first second third
active present iaceam iaceās iaceat iaceāmus iaceātis iaceant
imperfect iacērem iacērēs iacēret iacērēmus iacērētis iacērent
perfect iacuerim iacuerīs iacuerit iacuerīmus iacuerītis iacuerint
pluperfect iacuissem iacuissēs iacuisset iacuissēmus iacuissētis iacuissent
imperative singular plural
first second third first second third
active present iacē iacēte
future iacētō iacētō iacētōte iacentō
non-finite forms active passive
present perfect future present perfect future
infinitives iacēre iacuisse iacitūrus esse
participles iacēns iacitūrus
verbal nouns gerund supine
nominative genitive dative/ablative accusative accusative ablative
iacēre iacendī iacendō iacendum iacitum iacitū

Derived terms[edit]



  • iaceo” in Charlton T. Lewis & Charles Short, A Latin Dictionary, Oxford: Clarendon Press, 1879.
  • Michiel de Vaan (2008), Etymological Dictionary of Latin and the other Italic Languages, Leiden, Boston: Brill Academic Publishers