What does utmost mean?
The adjective utmost describes the greatest possible amount, value, degree, or limit, as in “of the utmost importance.” It is especially common in formal and literary contexts such as “with the utmost care” and “the utmost effort,” where it emphasizes that no greater degree could be imagined. Utmost can also function as a noun in the expression “do one’s utmost,” meaning to make the greatest possible effort. Because the word points to an absolute extreme, it often carries a tone of seriousness, urgency, or strong emphasis rather than simply describing something as very large or important. Its usefulness lies in this precise idea of maximality: while “great” can be comparative and “very” can indicate intensity without an implied limit, “utmost” expressly identifies the uppermost possible degree. The word’s history also echoes its meaning, since it developed from an Old English expression for the “outermost” or farthest point.
Of the greatest possible degree, amount, value, or extent.
"The decision is of the utmost importance."
Often used in formal or emphatic contexts to indicate an absolute maximum.
The greatest possible degree, amount, or effort.
"He did his utmost to finish the work on time."
Now chiefly encountered as a singular abstract noun in the expression “do one's utmost.”
The noun use of utmost is generally singular and is chiefly found in the expression “do one's utmost.”
"The staff did their utmost to resolve the complaints quickly."
Utmost began as a word for the farthest or outermost point; today it measures the very limit of importance, effort, or attention.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Where does utmost come from?
The word comes from Old English ūtmest, formed from ūt (“out”) and the superlative suffix -most; it originally meant “outermost” or “farthest.” Middle English utmost developed the sense of the highest or greatest possible degree, while the noun meaning “the greatest effort” also became established. The Germanic root behind ūt is also represented in English forms such as out, outer, and outward.
How utmost is actually used
Utmost is typically formal, literary, or emphatic. It expresses an absolute limit rather than merely a high degree, so it is often used where the seriousness or intensity of a situation requires emphasis.