Meaning

2 senses
  1. (not comparable, obsolete, rare)In or to whatever place; anywhere; whithersoever.

  2. (not comparable, obsolete, rare)In all places; everywhere.

Origin

From Middle English queþer-so-ever, weder-so-ever, wheder so ever, wheder-so-ever. By surf

From Middle English queþer-so-ever, weder-so-ever, wheder so ever, wheder-so-ever. By surface analysis, whether + so + -ever.

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See also

neighbours in the dictionary
whethersoever — meaning, examples, forms, synonyms | Krumeto