Definition of syneidesis in US English:

syneidesis

noun

  • That part of the conscience which is concerned with evaluating past actions. Contrasted with "synteresis".

Origin

Early 17th century. From ancient Greek συνείδησις knowledge, in Hellenistic Greek also consciousness, conscience (attested in various sources including Septuagint, New Testament) from συνειδέναι to be cognizant of or privy to a thing, (with reflexive pronoun) to be conscious of + -σις.

Pronunciation

syneidesis

/ˌsɪnʌɪˈdiːsɪs/