Whereon

conjunction
1.
on what or which.
adverb
2.
Archaic. on what?
adverb
1.
on what thing or place?
pronoun
2.
on which thing, place, etc

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Wheresoever
conjunction 1. in or to whatsoever place; wherever. conjunction, pronoun, adverb (subordinating) 1. (rare) an intensive form of wherever
Where someone is at
where does one get off doing something
Where someone is coming from
where someone’s head is at