#2051 ἐρίζω erizo {er-id'-zo}

 from G2054; TDNT - n/a; v

—Greek Word Study (Transliteration-Pronunciation Etymology & Grammar)

 1) to wrangle, engage in strife
    1a) used to describe the calm temper of Jesus in contrast with the
        vehemence of the Jewish doctors wrangling together about
        tenets and practices

—Thayer's (New Testament Greek-English Lexicon)

—Strong's (Greek Dictionary of the New Testament)

—NAS Exhaustive Concordance of the Bible with Hebrew-Aramaic and Greek Dictionaries

 AV - strive 1; 1

—Exhaustive Concordance (KJV Translation Frequency & Location)