LATIN DICTIONARYLexicon Latīnum
adjectivefirst/second-declension adjective

inofficiōsus

inofficiōsus (feminine inofficiōsa, neuter inofficiōsum)
Classical[ɪ.nɔf.fɪ.kiˈoː.sʊs]Ecclesiastical[i.nof.fi.t͡ʃiˈɔː.s̬us]

Meaning

  1. adjectivenot observant of his duty, undutiful
    hūmāna gēns inofficiōsa Deīthe human race fails in its duty to God
    lībertus inofficiōsus patrōnōthe freedman is undutiful toward his patron
  2. adjectivecontrary to one’s duty
    testāmentum inofficiōsuma will in which nothing is left to, or which adversely affects, one’s nearest relatives, children, etc.
  3. adjectivenot obliging, disobliging
  4. Medieval Latinadjectivenull and void

Declension

singular
formmasculinefeminineneuter
nominativeinofficiōsusinofficiōsainofficiōsum
genitiveinofficiōsīinofficiōsaeinofficiōsī
dativeinofficiōsōinofficiōsaeinofficiōsō
accusativeinofficiōsuminofficiōsaminofficiōsum
ablativeinofficiōsōinofficiōsāinofficiōsō
vocativeinofficiōseinofficiōsainofficiōsum
plural
formmasculinefeminineneuter
nominativeinofficiōsīinofficiōsaeinofficiōsa
genitiveinofficiōsōruminofficiōsāruminofficiōsōrum
dativeinofficiōsīsinofficiōsīsinofficiōsīs
accusativeinofficiōsōsinofficiōsāsinofficiōsa
ablativeinofficiōsīsinofficiōsīsinofficiōsīs
vocativeinofficiōsīinofficiōsaeinofficiōsa

ĭn-offĭcĭōsus, a, um, adj.,
I. undutiful, inofficious.
I. In gen.
A. Not observant of his duty, undutiful: humana gens inofficiosa dei, Tert. Apol. 40: libertus inofficiosus patrono, Dig. 37, 14, 1.—
B. Contrary to one's duty: testamentum, i. e. one in which nothing is left to one's nearest relatives, children, etc., Cic. Verr. 1, 42, 107; cf. Dig. 5, 2.—
II. In partic., not obliging, disobliging: in aliquem, Cic. Att. 13, 27, 1.

Origins

  1. Proto-Indo-European*né
  2. Proto-Indo-European*n̥-
  3. Proto-Italic*n̥-
  4. Latininofficiōsus

Latin officiōsus Latin inofficiōsus From in- (“not”) + officiōsus (“dutiful, obliging, attentive”).

Descendants
  • Englishinofficious
  • Frenchinofficieux

In English words that came into English from inofficiōsus

  • inofficiousinofficiōsus

Quick answers

What does inofficiōsus mean in Latin?
inofficiōsus, a adjective, means “null and void”.
How do you pronounce inofficiōsus?
In classical Latin, [ɪ.nɔf.fɪ.kiˈoː.sʊs]; in ecclesiastical (church) Latin, [i.nof.fi.t͡ʃiˈɔː.s̬us].
Where does inofficiōsus come from?
Proto-Indo-European *né → Proto-Indo-European *n̥- → Proto-Italic *n̥- → Latin inofficiōsus.