translated "brute" in the AV of 2—Peter 2:12; Jude 1:10 , signifies "without reason," RV, though, as J. Hastings points out, "brute beasts" is not at all unsuitable, as "brute" is from Latin brutus, which means "dull, irrational;" in Acts 25:27 it is rendered "unreasonable."
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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