From a compound of sukon and a derivative of phaino; to be a fig-informer (reporter of the law forbidding the exportation of figs from Greece), "sycophant", i.e. (genitive and by extension) to defraud (exact unlawfully, extort) -- accuse falsely, take by false accusation.
KJV: And the soldiers likewise demanded of him, saying, And what shall we do? And he said unto them, Do violence to no man, neither accuse any falsely; and be content with your wages.
NASB: Some soldiers were questioning him, saying, "And what about us, what shall we do?" And he said to them, "Do not take money from anyone by force, or accuse anyone falsely, and be content with your wages."
KJV: And Zacchaeus stood, and said unto the Lord; Behold, Lord, the half of my goods I give to the poor; and if I have taken any thing from any man by false accusation, I restore him fourfold.
NASB: Zaccheus stopped and said to the Lord, "Behold, Lord, half of my possessions I will give to the poor, and if I have defrauded anyone of anything, I will give back four times as much."