Adam Clarke on 1 Samuel 25:3

The name of the man was Nabal - The word נבל nabal signifies to be foolish, base, or villanous; and hence the Latin word nebulo, knave, is supposed to be derived.

The name of his wife Abigail - The joy or exultation of my father. A woman of sense and beauty, married to the boor mentioned above, probably because he was rich. Many women have been thus sacrificed.

Of the house of Caleb - והוא כלבי vehu Chalibbi, "he was a Calebite." But as the word caleb signifies a dog, the Septuagint have understood it as implying a man of a canine disposition, and translate it thus, και ὁ ανθρωπος κυνικος, he was a doggish man. It is understood in the same way by the Syriac and Arabic.