1. (a.) Situated at the farthest point or extremity; farthest out; most distant\; extreme; as, the utmost limits of the land; the utmost extent of human knowledge.

2. (a.) Being in the greatest or highest degree, quantity, number, or the like; greatest; as, the utmost assiduity; the utmost harmony; the utmost misery or happiness.

3. (n.) The most that can be; the farthest limit; the greatest power, degree, or effort; as, he has done his utmost; try your utmost.

acme all apex apogee at the height at the limit best brow cap ceiling climax cloud nine crest crown culmen culmination edge end extreme extreme limit extremity far out farthest first-class first-rate furthermost furthest greatest heaven heavens height high noon highest highest degree highest pitch highest point limit maximal maximum meridian most mountaintop ne plus ultra no place higher noon nth degree outermost outmost outside peak pinnacle pitch point pole radical remotest ridge seventh heaven sky spire summit superlative supreme the whole tip tip-top too much top top-notch topmost ultra ultra-ultra upmost upper extremity uppermost utmost extent uttermost vertex very top way out zenith