Utmost
/ˈʌˌtmoʊst/
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Definition
(adj) superlative form of utter: most utter; situated at the most distant limit; farthest, outermost.
Sentence Examples
Let's take the utmost caution against errors.
He treated it with utmost care.
CEFR Practice Quiz
Please treat the matter with the ____ care, as it is a very sensitive issue for the whole company today.