utmost用作名词的意思是“极限,最大限度”,又可拼作uttermost。

do〔try〕 one's utmost
竭力,竭尽所能do or try as much as one can
The ambassador did his utmost to prevent the outbreak of hostilities.这位大使竭尽全力防止战事的爆发。

That is the utmost that I can do.我最多只能做到那样。
This watch is worth 10 pounds at the utmost.这块表最多值十英镑。
Each man is free to exercise his special talents to the utmost.每个人都可以尽力发挥他的专长。

［同义词］ adj.  greatest, highest n.  best, peak, ultimate
［词源］＜古英语utemest(最远的,极限)

utmost用作形容词的意思是“极度的,最大的,最远的”,又可拼作uttermost。

用作定语
▲～+n.
 Learning is of the utmost importance.学习极为重要。
Without problem, the utmost problem.没有问题是最大的问题。
He walked to the utmost edge of the cliff.他走到悬崖的最边缘的地方。
用作表语
▲S+be+～
 The ability for him to get the job is utmost.他得到这份工作的可能性极大。