To some other place or direction; whither elsewhere.
An archaic combination of 'else' (otherwise) and 'whither' (an Old English word meaning 'to what place' or 'in what direction'), creating a directional adverb from Middle English.
Whither' became obsolete as modern English replaced it with 'where,' but words like 'elsewhither' show us how comprehensively this word was purged—today's speakers don't even recognize 'whither' unless they've read Shakespeare.
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