Easton's Bible Dictionary (1897)
Fortunate, the representative of the tribe of Manasseh among the twelve “spies” sent by Moses to spy the land (Num. 13:11).
Smith's Bible Dictionary (1863)
(fortunate), son of Susi; the Manassite spy sent by Moses to explore Canaan.
Hastings' Dictionary of the Bible (1898) & Schaff's Bible Dictionary
GAD'DI (fortunate), the spy from the tribe of Manasseh. Num 13:11.
Hitchcock's Bible Names (1869)
my troop; a kid