Adverb from dikaios; equitably -- justly, (to) righteously(-ness).
see GREEK dikaios
1. justly, agreeably to right: κρίνειν (see δίκαιος, 2), 1 Peter 2:23; to suffer, Luke 23:41.
2. properly, as is right: 1 Corinthians 15:
3. uprightly, agreeably to the law of rectitude: 1 Thessalonians 2:10 (ὁσίως καί δικαίως, as Plato, rep. 1, p. 331 a. (cf. Trench, § 88, p. 328)); Titus 2:12.