furthermost en · ADJ
Etymology
From Middle English forthirmaste, forþermaste, furthermost; equivalent to further + -most.
Meanings
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(form-of, superlative) superlative form of further: most further; the most especially forward, ahead or (figurative) progressed
form of further
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(form-of, proscribed, sometimes, superlative) superlative form of far: most far; farthest
form of far