opinor

From *opīnus (in inopīnus, necopīnus), of unclear origin.

The word is traditionally derived from Proto-Indo-European *op- (“to prefer, choose”), whence optō. However, Schrijver argues that the semantic link between "to choose" and "to believe" is tenuous, leaving the connection uncertain.

Vine notes that an alternative spelling of the word found in a third-century Praenestine inscription, opeinor, suggesting that the Proto-Italic form contained *-ei- and not *-ī-, rendering formal analysis even more difficult.^[1]

• (Classical Latin) IPA^(key): [ɔˈpiː.nɔr]
• (modern Italianate Ecclesiastical) IPA^(key): [oˈpiː.nor]

opīnor (present infinitive opīnārī, perfect active opīnātus sum); first conjugation, deponent

1. to suppose, imagine, deem, think, judge, opine

   Synonyms: puto, cogito, sentio, existimo, arbitror, credo, iudico, censeo, considero

• “opinor”, in Charlton T. Lewis and Charles Short (1879) A Latin Dictionary, Oxford: Clarendon Press
• “opinor”, in Charlton T. Lewis (1891) An Elementary Latin Dictionary, New York: Harper & Brothers
• opinor in Gaffiot, Félix (1934) Dictionnaire illustré latin-français, Hachette.
• William Dwight Whitney, Benjamin E[li] Smith, editors (1911), “opine”, in The Century Dictionary […], New York, N.Y.: The Century Co., →OCLC.
• Julius Pokorny (1959), Indogermanisches etymologisches Wörterbuch, in 3 vols, Bern, München: Francke Verlag