incapable of being evaded; inescapable: an ineluctable destiny.Synonyms: inevitable, unavoidable, irrevocable, unpreventable, unstoppable, inexorable. Antonyms: certain, sure, fated.
Origin: 1615–25; < Latininēluctābilis, equivalent to in-in-3 + ēluctā(rī) to force a way out or over, surmount (ē-e-1 + luctārī to wrestle) + -bilis-ble