A Dictionary of the Book of Mormon/Amalekites
AMALEKITES, A sect of Nephite apostates whose origin is not given. Many of them were after the order of Nehor. Very early in the days of the republic they had affiliated with the Lamanites and with them built a large city, not far from the waters of Mormon, which they called Jerusalem. They were exceedingly crafty and hard-hearted, and in all the ministrations of the sons of Mosiah among them only one was converted. They led in the massacres of the Christian Lamanites or people of Anti-Nephi-Lehi; and in later years the Lamanite generals were in the habit of placing them in high command in their armies, because of their greater force of character, their intense hatred to their former brethren, and their more wicked and murderous disposition. In the sacred record they are generally associated with the Zoramites and Amulonites.