Deuteronomy 2:20
(That too was regarded as the land of the Rephaim, who used to live there, though the Ammonites called them Zamzummites.
Berean Standard Bible
(That also was accounted a land of giants: giants dwelt therein in old time; and the Ammonites call them Zamzummims;
(That also is considered a land of Rephaim. Rephaim lived there in the past, but the Ammonites call them Zamzummim,