English
hithermost
From hither + -most.
A compound of hither + -most
Proto-Indo-European *ḱís ‘this (here)’
Proto-Germanic *hiz ‘this’
Proto-Germanic *hidrê ‘to this place, to here, hither’
Old English hider ‘to here, hither’
English hither
Today it means
adj Nearest to this side.
Language periods are conventional ranges, not dates for this word.
Etymograph / hithermost