[1] : The Collaborative International Dictionary of English v.0.48

utmost \ut"most`\, a. oe. utmeste, utemest, as. ?temest, a
   superlative fr. ?te out. ????. see out, and cf.
   aftermost, outmost, uttermost.
   1913 webster
   1. 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. --spenser.
      1913 webster

            we coasted within two leagues of antibes, which is
            the utmost town in france.            --evelyn.
      1913 webster

            betwixt two thieves i spend my utmost breath.
                                                  --herbert.
      1913 webster

   2. 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.
      1913 webster

            he shall answer . . . to his utmost peril. --shak.
      1913 webster

            six or seven thousand is their utmost power. --shak.
      1913 webster
see also:
out aftermost outmost uttermost 

[2] : The Collaborative International Dictionary of English v.0.48

utmost \ut"most`\, n.
   the most that can be; the farthest limit; the greatest power,
   degree, or effort; as, he has done his utmost; try your
   utmost.
   1913 webster

         we have tried the utmost of our friends. --shak.
   1913 webster

[3] : WordNet (r) 2.0

utmost
     adj 1: of the greatest possible degree or extent or intensity;
            "extreme cold"; "extreme caution"; "extreme pleasure";
            "utmost contempt"; "to the utmost degree"; "in the
            uttermost distress" syn: extreme, utmosta, uttermosta
     2: highest in extent or degree; "to the last measure of human
        endurance"; "whether they were accomplices in the last
        degree or a lesser one was...to be determined
        individually" syn: last
     3: comparatives of `far' most remote in space or time or
        order; "had traveled to the farthest frontier"; "don't go
        beyond the farthermost or furthermost tree"; "explored
        the furthest reaches of space"; "the utmost tip of the
        peninsula" syn: farthermost, farthest, furthermost,
         furthest, uttermost
     n : the greatest possible degree; "he tried his utmost" syn: uttermost,
          maximum, level best
see also:
extreme utmosta uttermosta last farthermost farthest 
furthermost furthest uttermost maximum level best 

[4] : Moby Thesaurus II by Grady Ward, 1.0

81 moby thesaurus words for "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

Utmost >> U Words
Utmost, definition of term: Utmost
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