Finality

Noun

 * 1) The state of "being final"; the condition from which no further changes occur
 *  The finality of my father's death suddenly hit me; there would be no more bedtime stories, no more games of catch in the back yard. 

Thesaurus
Z, apodosis, catastrophe, ceasing, certainty, certitude, cessation, coda, conclusion, consummation, crack of doom, culmination, curtain, curtains, death, decease, decisiveness, definitiveness, denouement, destination, destiny, doom, effect, end, end point, ending, envoi, epilogue, eschatology, eventuality, expiration, fate, final solution, final twitch, final words, finale, finis, finish, fixedness, futureness, futurity, goal, immutability, incontrovertibility, indisputability, irrefutability, irreversibility, izzard, last, last breath, last gasp, last things, last trumpet, last words, latter end, omega, payoff, period, peroration, quietus, resolution, resting place, stoppage, stopping place, sureness, swan song, term, terminal, termination, terminus, ultimateness, unalterability, unchangeability, windup