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, suggests that the Proto-Italic form contained an *-ei- and not an *-ī-, rendering formal analysis even more difficult.^[1]

• (Classical Latin) IPA^(key): /oˈpiː.nor/, [ɔˈpiːnɔr]
• (modern Italianate Ecclesiastical) IPA^(key): /oˈpi.nor/, [oˈpiːnor]

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.
• “opine”, in The Century Dictionary […], New York, N.Y.: The Century Co., 1911, →OCLC.
• Julius Pokorny (1959), Indogermanisches etymologisches Wörterbuch, in 3 vols, Bern, München: Francke Verlag