The End That Needs a Companion
אַחֲרִית means 'latter end' — not inherently a good one.
The word אַחֲרִית grows from a root meaning 'after' or 'behind,' and its basic sense is simply 'what comes at the last.' Elsewhere in the Hebrew scriptures it describes the close of a life, the final condition of a nation, or the far horizon of history. None of those uses guarantees a favorable outcome — the word is neutral about whether the end is welcome or dreadful.
That is exactly why the verse pairs it with תִּקְוָה, 'hope.' The two words lean on each other: אַחֲרִית supplies the idea of an outcome that is still out ahead, while תִּקְוָה colors that outcome as something longed for and expected. Strip away תִּקְוָה and you are left with a word that merely points forward into the unknown. The goodness of the ending is not carried by אַחֲרִית alone — it is a joint project of the phrase.