sincerus

Etymology
From, from (compare Latin , and 🇨🇬) and  (compare 🇨🇬). According to De Vaan, the second part of the compound derives from the unattested adjective found in the first part of, which is also related to. However, this is problematic: the expected outcome of Proto-Italic *senkairos would be *sincīrus, since Proto-Italic /ai/ gives /iː/, not /eː/ under vowel reduction (as in ), and it is implausible that this word was imported from rural dialects of Latin which monophthongize /ai/ to /ɛː/, as in, without leaving any trace of the urban Latin development.

Adjective

 * 1) clean, pure, sound.
 * 2) uninjured, whole.
 * 3) real, natural.
 * 4) genuine, sincere.