Greek · Greek moral and religious psychology

syneidēsis

συνείδησις

Heard as sin-ay-DAY-sis

Period
Hellenistic to early Christian
Semantic range
Joint knowledge, being privy, inner witness, moral awareness.
What it can mean
Knowing something with another, or with oneself as witness. Conscience in Pauline and later Christian usage.
What it should not be equated with
Not a synonym for modern phenomenal consciousness. Not the same word as synaisthēsis.
Primary or early source
New Testament usage; earlier Greek moral vocabulary.
Scholarly source
SEP medieval conscience; Thiel on the later Latin reception.
Relation to other terms
Ancestor of Latin conscientia on the knowing-with shore.