Smith's Bible Dictionary (1863)
(opportune).
Hastings' Dictionary of the Bible (1898) & Schaff's Bible Dictionary
AT'TAI (opportune). (1). A descendant of Judah. 1 Chr 2:35, Eze 23:36. (2). A Gadite chief. 1 Chr 12:11. (3). A son of Rehoboam. 2 Chr 11:20.
Hitchcock's Bible Names (1869)
same as Athlai