Entry 1 sense Webster, 1913 Inevitably · In·ev·i·ta·bly · IPA /ɪˈnɛvɪtəbli/ 01 adv. Without possibility of escape or evasion; unavoidably; certainly. 1. Without possibility of escape or evasion; unavoidably; certainly. “Inevitably thou shalt die.” — Milton. “How inevitably does immoderate laughter end in a sigh!” — South.