Lexical Definition

‎εἰρηνεύω‎ eirēneúō (i-rane-yoo'-o) be at peace G:V
from ‎εἰρήνη‎

be at (have, live in) peace, live peaceably.

Usage: 9 forms in 14 verses
Form Translated As     In Verse(s)
εἰρηνεύοντεσ living at peace Rom.12.18
εἰρηνεύετε do be at peace Mark.9.502Cor.13.111Thess.5.13
ειρηνεύσουσί shall make peace LXX.Job.5.23
ειρηνεύσει shall be at peace LXX.Job.5.24
ειρηνεύοντα Making peace LXX.Job.16.12
ειρηνεύειν at peace LXX.Job.15.21
ειρήνευσεν Jehoshaphat made peace LXX.1Kgs.22.44
had peace LXX.2Chr.20.30
made peace LXX.Job.9.4
there was peace LXX.2Chr.14.6
ειρήνευσε was at peace LXX.2Chr.14.5
ειρήνευσα was I at peace LXX.Job.3.26

Abbott-Smith

εἰρηνεύω (< εἰρήνη), [in LXX chiefly for שׁלם, שׁקט ;]

1. to bring to peace, reconcile (so I Mac 6:60).
2. to keep peace, be at peace: Mk 9:50, Ro 12:18, II Co 13:11, I Th 5:13 (cf. Si 28:9; Cremer, 246).†

Abbott-Smith References

Book Refs
Mark 9:50
Romans 12:18
2 Corinthians 13:11
1 Thessalonians 5:13

Liddell-Scott-Jones

εἰρηνεύω-εύω,

bring to peace, reconcile, [Refs 2nd c.AD+]

__II intransitive, keep peace, live peaceably, [NT+5th c.BC+]:—middle, πρὸς τοὺς κρείττους εἰρηνεύωεύεσθαι [Refs 4th c.BC+]; χώρα -ομένη ἐκ παλαιοῦ [Refs 2nd c.BC+]

LSJ Scripture Refs: Rom.12.18