Strong’s Greek
G883 — Achaikos
The entry below is Strong’s own definition (1890, public domain), and every verse where the word occurs.
Ἀχαϊκός
Achaikos — pronounced ach-ah-ee-kos'
from 882; an Achaian; Achaicus, a Christian:--Achaicus. see GREEK for 882
1 occurrence in the KJV.
1 Corinthians 16:17
I am glad of the coming of Stephanas and Fortunatus and Achaicus: for that which was lacking on your part they have supplied.