is an Aramaic word akin to the Heb. req, "empty," the first "a" being due to a Galilean change. In the AV of 1611 it was spelled racha; in the edition of 1638, raca. It was a word of utter contempt, signifying "empty," intellectually rather than morally, "empty-headed," like Abimelech's hirelings, Judges 9:4 , and the "vain" man of James 2:20 . As condemned by Christ, Matthew 5:22 , it was worse than being angry, inasmuch as an outrageous utterance is worse than a feeling unexpressed or somewhat controlled in expression; it does not indicate such a loss of self-control as the word rendered "fool," a godless, moral reprobate.
With over 3,400 entries, this timeless classic is THE reference guide to New Testament Greek words for English readers. It explains the meaning of the original Greek with the added dimension of the context of the Greek word.Wikipedia
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