G1476
ἑδραῖος
steadfast
ἑδραῖος, -ον (ἕδρα, a seat), [in Sm.: Ps 32 (33):14, al. ;] __1. sitting, seated. __2. steadfast, firm; metaphorically, of moral fixity: 1Co.7:37 15:58, Col.1:23. † (AS)
The KJV translates G1476 in the following manner:
stedfast (4x), settled (2x)
Full Thayer's lexicon entry
ἑδραῖος — hedraîos
ἑδραῖος (rarely feminine ἑδραια (Winer's Grammar, § 11, 1)), ἑδραιον (ἕδρα, seat, chair);
1. sitting, sedentary, (Xenophon, Plato, others).
2. firm, immovable, steadfast, (Euripides, Plato, others); in the N. T. metaphorically, of those who are fixed in purpose: 1Co 15:58; Col 1:23; ἕστηκεν ἐν τῇ καρδία, 1Co 7:37.
3 occurrences
I Corinthians (2), Colossians (1)