in·e·luc·ta·ble 
(ĭn′ĭ-lŭktə-bəl)
(ĭn′ĭ-lŭktə-bəl)adj.
Not to be avoided or escaped; inevitable: "Those war plans rested on a belief in the ineluctable superiority of the offense over the defense" (Jack Beatty).
[Latin inēluctābilis : in-, not; see IN-1 + ēluctābilis, penetrable (from ēluctārī, to struggle out of : ex-, ex- + luctārī, to struggle).]
in′e·luc′ta·bili·ty n.
in′e·lucta·bly adv.