Hereafter

wiktionary

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From Old English hēræfter(“in the aftertime; later on”); equivalent to here +‎ after.

etymonline

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hereafter (adv.)

Old English heræfter "in the future; later on;" see here + after. Meaning "after death" is mid-14c. As a noun, "time in the future," from 1540s; meaning "a future world, the world to come" is from 1702.