inofficiosus

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

• (Classical Latin) IPA^(key): [ɪ.nɔf.fɪ.kiˈoː.sʊs]
• (modern Italianate Ecclesiastical) IPA^(key): [i.nof.fi.t͡ʃiˈɔː.s̬us]

inofficiōsus (feminine inofficiōsa, neuter inofficiōsum); first/second-declension adjective

1. undutiful, inofficious
   1. in general:
      1. not observant of his duty, undutiful

         hūmāna gēns inofficiōsa Deī

         the human race fails in its duty to God

         lībertus inofficiōsus patrōnō

         the freedman is undutiful toward his patron

      2. (of a thing) contrary to one’s duty

         testāmentum inofficiōsum

         a will in which nothing is left to, or which adversely affects, one’s nearest relatives, children, etc.

   2. (in particular) not obliging, disobliging
2. (Medieval Latin, of a charter or deed) null and void

First/second-declension adjective.

• inofficiōsitās

• officiosus

• English: inofficious
• French: inofficieux

• “ĭnoffĭcĭōsus”, in Charlton T. Lewis and Charles Short (1879) A Latin Dictionary, Oxford: Clarendon Press
• “inofficiosus”, in Charlton T. Lewis (1891) An Elementary Latin Dictionary, New York: Harper & Brothers
• "inofficiosus", in Charles du Fresne du Cange’s Glossarium Mediæ et Infimæ Latinitatis (augmented edition with additions by D. P. Carpenterius, Adelungius and others, edited by Léopold Favre, 1883–1887)
• ĭnoffĭcĭōsus in Gaffiot, Félix (1934) Dictionnaire illustré latin-français, Hachette, page 824/3.
• Jan Frederik Niermeyer, Mediae Latinitatis Lexicon Minus : Lexique Latin Médiéval–Français/Anglais : A Medieval Latin–French/English Dictionary, fascicle I (1976), page 540/2, “inofficiosus”