sum

1 a complete amount of something the sum of human knowledge on that subject Synonyms aggregate, full, whole, summation, sum total, total, totalityRelated Words gross; completeness, comprehensiveness, cumulativeness, entirety; bulk, lion's share, mass; enchilada, schmearNear Antonyms net

2 a short statement of the main points the district attorney delivered a sum of the evidence against the accused that was simply staggering Synonyms abstract, breviary, brief, capsule, conspectus, digest, encapsulation, epitome, inventory, outline, précis, recap, recapitulation, résumé (or resume also resumé), roundup, rundown, run-through, summary, summa, summarization, summing-up, sum-up, synopsis, wrap-upRelated Words abbreviation, abridgment (or abridgement), compend, compendium, condensation, curtailment, shortening; simplification, streamlining; rehash, reprise; conclusion, epilogue (also epilog)Near Antonyms amplification, enlargement, expansion; addendum, supplement

3 the highest part or point he declared that he had reached the sum of joy when his newborn daughter was laid in his arms Synonyms acme, apex, apogee, capstone, climax, crescendo, crest, crown, culmination, head, high noon, high tide, high-water mark, meridian, ne plus ultra, noon, noontime, peak, pinnacle, height, summit, tip-top, top, zenithRelated Words bloom, blossom, flood tide, flower, glory, heyday, prime; cap, ceiling, roof; extreme, extremity, tip, vertex; high, highlight, highspotNear Antonyms abyss, base, foot; minimumAntonyms bottom, nadir, rock bottom

4 the central part or aspect of something under consideration the sum of the issue is: who will pay for this? Synonyms bottom line, bull's-eye, centerpiece, core, essence, gist, heart, kernel, keynote, meat, meat and potatoes, net, nub, nubbin, nucleus, pith, pivot, point, root, cruxRelated Words course, direction, drift, tenor; body, content, substance; hypothesis, proposition, purport, subject, theme, thesis

to combine (numbers) into a single sum can sum figures in his head faster than I can punch them into a calculator Synonyms cast (up), foot (up), add, summate, tot (up), total, totalize, tote (up)Related Words calculate, cipher, compute, figure, reckon, table, tabulate, tally, work out; divide, multiply, subtract; count, enumerate, number, tell; recompute, refigure