Strong's Concordance

Original word: καπηλεύω
Transliteration: kapéleuó
Definition (short): peddling
Definition (full): to make a trade of

NAS Exhaustive Concordance

Word Origin: from kapélos (a huckster, peddler)
Definition: to make a trade of
NASB Translation: peddling (1).
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Strong's Exhaustive Concordance

From kapelos (a huckster); to retail, i.e. (by implication) to adulterate (figuratively) -- corrupt.
KJV: For we are not as many, which corrupt the word of God: but as of sincerity, but as of God, in the sight of God speak we in Christ.
NASB: For we are not like many, peddling the word of God, but as from sincerity, but as from God, we speak in Christ in the sight of God.