Source : Webster's Revised Unabridged Dictionary (1913)

Inevitably \In*ev"i*ta*bly\, adv.
   Without possibility of escape or evasion; unavoidably;
   certainly.

         Inevitably thou shalt die.               --Milton.

         How inevitably does immoderate laughter end in a sigh!
                                                  --South.

Source : WordNet®

inevitably
     adv 1: in such a manner as could not be otherwise; "it is
            necessarily so"; "we must needs by objective" [syn: {necessarily},
             {of necessity}, {needs}]
     2: by necessity; "the new council was inescapably of political
        meaning" [syn: {inescapably}, {ineluctably}, {unavoidably}]