charming, overwhelming, overpowering, solid, enchanting, unresisting, powerful, unstoppable, solid as a rock, heavy-duty, stubborn, unavoidable, attractive, durable, lovable, resistless, inescapable, robust, compulsive, tempting, tough, supine, strong, cannot/can't help something, inexorable, uncontrollable, irrevocable, alluring, sturdy, inevitable, invincible, persuasive
- He will ask you of irresistible grace, and of the Sacrament." - "By What Authority?", Robert Hugh Benson.
- He thought that the time for departure had now arrived, and an irresistible longing urged him back to the world and Daphne. - "The Complete Historical Romances of Georg Ebers", Georg Ebers.
- His hand stole down towards his pocket, but the shining argument in Mr. Sabin's hand was irresistible. - "Mysterious Mr. Sabin", E. Phillips Oppenheim.