impropero

• inproperō

From in- +‎ properō.

• (Classical Latin) IPA^(key): /imˈpro.pe.roː/, [ɪmˈprɔpɛroː]
• (modern Italianate Ecclesiastical) IPA^(key): /imˈpro.pe.ro/, [imˈprɔːpero]

improperō (present infinitive improperāre, perfect active improperāvī, supine improperātum); first conjugation

1. (intransitive, literally) to enter hastily upon
2. (transferred senses):
   1. (intransitive) to reproach, outrage, or insult
   2. (transitive) to impute (something to someone), to ascribe (something blameworthy to someone)

• “impropero”, in Charlton T. Lewis and Charles Short (1879) A Latin Dictionary, Oxford: Clarendon Press
• impropero 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)
• imprŏpĕro in Gaffiot, Félix (1934) Dictionnaire illustré latin-français, Hachette, page 786/3.
• Jan Frederik Niermeyer, Mediae Latinitatis Lexicon Minus : Lexique Latin Médiéval–Français/Anglais : A Medieval Latin–French/English Dictionary, fascicle I (1976), page 516/1, “improperare”