Inevitable, certain, ineluctable, ineludible, inescapable, inevasible, necessary, returnless, unavoidable, unescapable, unevadable.

Mournfulness, sadness, sorrowfulness, unhappiness; grieving, lamentation, mourning, sorrowing; dejection, depression, melancholy; agony, distress, dolor, misery, suffering, wretchedness.

Abandon, desert, forsake; reject, repudiate; cast, discard.

Adieu, farewell, goodbye.