uttermost

(noun) the greatest possible degree. Synonyms: utmost, maximum, level best. Example: "He tried his utmost."

(adj) of the greatest possible degree or extent or intensity. Synonyms: extreme, utmost(prenominal), uttermost(prenominal). Examples: "Extreme cold." "Extreme caution." "Extreme pleasure." "Utmost contempt." "To the utmost degree." "In the uttermost distress."

(adj) (comparatives of `far') most remote in space or time or order. Synonyms: farthermost, farthest, furthermost, furthest, utmost. Examples: "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."