Noah Webster's Dictionary (a.) That can not be successfully withstood or opposed; superior to opposition; resistless; overpowering; as, an irresistible attraction.

Multi-Version Concordance Irresistible (1 Occurrence) Daniel 11:10 His sons shall war, and shall assemble a multitude of great forces, which shall come on, and overflow, and pass through; and they shall return and war, even to his fortress. (See NIV)