utmost.
The most extreme; greatest, ultimate.
Meaning & usage
The most extreme; greatest, ultimate.
the utmost assiduity
the utmost harmony
Where this word comes from
PIE word *úd From Middle English utmost, utemest [and other forms], from Old English ūtmest, ūtemest [and other forms], from ūt, ūte (“out; outdoors, outside”) + -mest (suffix meaning ‘furthest’, used to form superlatives of some adjectives) (and conflated with most). Ūt is derived from Proto-Germanic *ūt (“out, outward”), from Proto-Indo-European *úd (“out, outward”). Equivalent to out + -most.
The greatest possible capability, extent, or quantity; maximum.
at the utmost to the utmost
Where this word comes from
PIE word *úd From Middle English utmost, utemest [and other forms], from Old English ūtmest, ūtemest [and other forms], from ūt, ūte (“out; outdoors, outside”) + -mest (suffix meaning ‘furthest’, used to form superlatives of some adjectives) (and conflated with most). Ūt is derived from Proto-Germanic *ūt (“out, outward”), from Proto-Indo-European *úd (“out, outward”). Equivalent to out + -most.
superlative form of utter: most utter; situated at the most distant limit; farthest, outermost.
the utmost limits of the land
the utmost extent of human knowledge
Where this word comes from
PIE word *úd From Middle English utmost, utemest [and other forms], from Old English ūtmest, ūtemest [and other forms], from ūt, ūte (“out; outdoors, outside”) + -mest (suffix meaning ‘furthest’, used to form superlatives of some adjectives) (and conflated with most). Ūt is derived from Proto-Germanic *ūt (“out, outward”), from Proto-Indo-European *úd (“out, outward”). Equivalent to out + -most.
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Definitions, grammatical labels, IPA, etymology and examples: Wiktionary contributors, extracted by Kaikki / Wiktextract. Adapted under CC BY-SA 4.0. Selected fields and authored examples are shown; third-party quotations and audio are omitted. See contributor history.
Last enriched 2026-09-10. Definitions are in English. Romanizations are shown when supplied by the source; syllable estimates are omitted for unsupported scripts.