THE FULL ARTICLE — from the International Standard Bible Encyclopedia

The International Standard Bible Encyclopedia (1915), general editor James Orr — public domain, printed whole.

un-sur'-tin,un-sur'-tin-ti: Adjective adelos, 2 Macc 7:34; 1Co 14:8; adverb adelos, 1Co 9:26; noun adelotes, 1Ti 6:17; adelos means "not clear," and so "uncertain." Also the King James Version The Wisdom of Solomon 9:14 for episphales, "unsteady," the Revised Version (British and American) "prone to fall."