Lexical Definition

‎ἐπιείκεια‎ epieíkeia (ep-ee-i'-ki-ah) gentleness ^G:N-F
from ‎ἐπιεικής‎

clemency, gentleness.

• suitableness, i.e. (by implication) equity, mildness

Abbott-Smith

ἐπιεικία (Rec. -είκεια), -ας, ἡ (< ἐπιεικής), [in LXX: Wi 2:19 12:18 Ba 2:27, Da LXX 3:(42), 4:24*, TH (3:42), II Mac 2:22 10:4, III Mac 3:15 7:6 * ;]
fairness, moderation, gentleness ("sweet reasonableness," Matthew Arnold): Ac 24:4; c. πραΰτης, II Co 10:1.†
SYN.: πραΰτης (v. Tr., Syn., § xliii)

Abbott-Smith References

Liddell-Scott-Jones

ἐπιείκεια, ἡ,

reasonableness, [ἐπιείκειαν 5th c.BC: Hippocrates Medicus “περὶ ἀγμῶν” 31 ">Refs 5th c.BC+].

__2. equity, opposed to strict law, [ἐπιείκειαν, opposed to κατὰ τοὺς ὅρκους, 5th-6th c.BC: Isocrates Orator 18.34; ἄκαμπτον εἰς ἐ. 1st-2nd c.AD: Plutarchus Biographus et Philosophus “Cat.Mi.” 4. ">Refs 5th c.BC+]
__3. of persons, reasonableness, fairness, [NT+5th c.BC+]; also, goodness, virtuousness, [Refs 5th c.BC+]
__II. personified, [Refs 1st c.AD+]

_{LSJ Scripture Refs: 2Cor.10.1}