UTTERMOST

farthermost, farthest, furthermost, furthest, utmost, uttermost

(adjective) (comparatives of ‘far’) most remote in space or time or order; “had traveled to the farthest frontier”; “don’t go beyond the farthermost (or furthermost) tree”; “explored the furthest reaches of space”; “the utmost tip of the peninsula”

extreme, utmost, uttermost

(adjective) of the greatest possible degree or extent or intensity; “extreme cold”; “extreme caution”; “extreme pleasure”; “utmost contempt”; “to the utmost degree”; “in the uttermost distress”

utmost, uttermost, maximum, level best

(noun) the greatest possible degree; “he tried his utmost”

Source: WordNet® 3.1

Etymology

Adjective

uttermost (not comparable)

Outermost.

Extreme; utmost; of the farthest, greatest, or highest degree.

Noun

uttermost (usually uncountable, plural uttermosts)

The utmost; the highest or greatest degree; the farthest extent.

Source: Wiktionary

Ut"ter*most, a. Etym: [From Utter, a.; cf. Utmost, and Outermost.]

Definition: Extreme; utmost; being; in the farthest, greatest, or highest degree; as, the uttermost extent or end. "In this uttermost distress." Milton.

Ut"ter*most`, n.

Definition: The utmost; the highest or greatest degree; the farthest extent. Tennyson. Wherefore he is able also to save them to the uttermost that come unto God by him. Heb. vii. 25. He cannot have sufficient honor done unto him; but the uttermost we can do, we must. Hooker.

Source: Webster’s Unabridged Dictionary 1913 Edition