Main Entry: ¹ut·most

Pronunciation: \ˈət-ˌmōst, especially Southern -məst\

Function: adjective

Etymology: Middle English, alteration of utmest, from Old English ūtmest, superl. adjective, from ūt out, adverb — more at out

Date: before 12th century

1 : situated at the farthest or most distant point : extreme <the utmost point of the earth — John Hunt>
2 : of the greatest or highest degree, quantity, number, or amount <a matter of utmost concern>