In or at a time following this; afterward; later on (archaic or dialectal form).
Compound of hereafter (from here + after, meaning 'from now on') and -ward (from Old English weard, meaning 'toward' or 'in the direction of'). The -ward suffix in adverbs indicates direction or orientation in time or space.
The -ward suffix is a directional wizard in English—'toward,' 'backward,' 'forward,' 'afterward'—and adding it to time words like 'here' created 'hereafterward,' showing how speakers could generate new adverbs by combining directional parts.
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