Quick Definition
συνεπιμαρτυρέω v. I unite in bearing witness
Strong's Definition
from 4862 and 1957; to testify further jointly, i.e. unite in adding evidence
KJV Usage: also bear witness
UBS Dictionary of the Greek New Testament
verb | μαρτυρέω
33.268 · Communication · Witness, Testify
to add one’s witness to, to witness together with to join one’s witness to that of others
UBS Dictionary of the Greek New Testament © United Bible Societies, licensed CC BY-SA 4.0.
Thayer's Greek Lexicon
συν-επι-μαρτυρέω, -@, ptcp. gen. sing. masc. συνεπιμαρtupovrtos ; to attest together with; to join in bearing witness, to unite in adding testimony: Heb. ii. 4. (Aristot., Polyb., [Plut.], Athen.,Sext. Emp.; Clem. Rom. 1 Cor. 23,5; 43, 1.)
Mounce Concise Greek Dictionary
συνεπιμαρτυρέω synepimartyreō 1x
to join in according testimony; to support by testimony, to confirm, sanction, Heb. 2:4*
Abbott-Smith Greek Lexicon
* συν-επι-μαρτυρέω, -ῶ to join in attesting, bear witness together with: He 2:4 (Arist., Polyb., al.).†
Moulton & Milligan — Vocabulary of the Greek NT
συνεπιμαρτυρέω, “bear witness together with” (Heb 24): cf. Aristeas IOI συνεπιμαρτυρήσας δὲ τούτῳ τὸν ἐχόμενον ἠρώτα, ‘he expressed his approval and asked the next”’ (Thackeray).
Liddell-Scott-Jones — Greek-English Lexicon
συνεπιμαρτυρέω (sunepimartureō) — to testify with. συνεπιμαρτῠρ-έω, join in attesting, [NT+4th c.BC+]; τινι with one, [Refs 2nd c.BC+]; add one's evidence, [Refs 1st c.AD+]
II. Astrology texts, to be also configurate, of planets, [Refs 2nd c.BC+]