The furthest point or most distant; superlative form meaning at the greatest distance or most advanced degree.
From 'further' plus the superlative suffix '-most,' which comes from Old English and originally meant 'utmost' or 'extreme.' Compare with 'foremost' and 'uppermost.'
While 'furthest' and 'furthermost' mean the same thing, 'furthest' is standard modern English—'furthermost' survives mainly in literary or poetic contexts where the extra syllable sounds more dramatic.
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