From 'achar; the last or end, hence, the future; also posterity -- (last, latter) end (time), hinder (utter) -most, length, posterity, remnant, residue, reward.
see HEBREW 'achar
H319. acharith
אַחֲרִית61 noun feminine after-part, end; —
a. of place, only Psalm Eccl 139:9 (late) ׳א יָם.
b. of time, latter part or actual close (according to context), opposed to רֵאשִׁית; — of year Deuteronomy 11:12; of a man's life Numbers 23:10; Proverbs 5:11; Job 8:7; 42:12; of a people's existence Numbers 24:20; = final lot Deuteronomy 32:20, 29; Jeremiah 12:4; 31:17; Psalm 73:17; a future, i.e. a happy close of life, suggesting sometimes the idea of a posterity, promised to the righteous Proverbs 23:18 ("" תִּקְוָה hope) 24:14; Jeremiah 29:11 (א לָכֶם ׳לָתֵת וְתִקְוָה), withheld from the wicked Proverbs 24:20 ("" ׃ יִדְעָֽח נֵר ׃ see below); the end or ultimate issue of a course of action Jeremiah 5:31; Proverbs 14:12; 23:32 (of wine, i.e. of indulgence in it) 25:8; Isaiah 46:10 (absolute, but implicitly of a phase of history) 47:7 (of the conduct described 47:6 b-7 a) Daniel 12:8; Ecclesiastes 7:8; of a prediction = the event Isaiah 41:22. הַיָּמִים בְּאַחֲרִית in the end of the days, a prophetic phrase denoting the final period of the history so far as the speaker's perspective reaches; the sense thus varies with the context, but it often = the ideal or Messianic future; Genesis 49:1 (of the period of Israel's possession of Canaan) Numbers 24:14; Deuteronomy 4:30 (of the period of Israel's return to God after adversity) 31:29 (of the period of Israel's rebellion) Hosea 3:5; Isaiah 2:2 ( = Micah 4:1) Jeremiah 23:20 (see Graf) = 30:24; 48:47; 49:39; Ezekiel 38:16 (of the period of Gog's attack upon restored Israel) Daniel 2:28 (Aramaic) 10:14 (of the age of Antiochus Epiphanes): compare ׳כְּא הַשָּׁנִים Ezekiel 38:8.
c. ׳א הַגּוֺיִם Jeremiah 50:12 the last, hindermost of the nations (of Babylon), opposed to הגוים ראשׁית Amos 6:1 (Israel) compare Numbers 24:20 (Amalek) chief of the nations.
d. concrete posterity (extension of usage noted above in Proverbs 24:20) Psalm 37:37; 37:38 (possibly not more than 'a future' here) 109:13 ("" בְּדוֺר שְׁמָם יִמַּח אַחֵר) Amos 4:2; 9:1; Ezekiel 23:25 (twice in verse) (according to others, in these four passages, remnant, residue) Daniel 11:4.