Possibly a variation of the Hebrew word עֲכָר (‘akhar) meaning “trouble”. In the Old Testament, Achan is stoned to death because he steals forbidden items during the assault on Jericho.
Latinized form of the Greek name Ἀχαϊκός (Achaikos), which referred to the region in Greece called Ἀχαΐα (Achaia), situated on the northern coast of the Peloponnese. In the New Testament this is the name of a Corinthian Christian who aids Saint Paul.