Word Study
summum bonum
CIDE DICTIONARY
summum bonum, [L.].
The supreme or highest good, -- referring to the object of human life. [Webster 1913 Suppl.]
OXFORD DICTIONARY
summum bonum, n. the highest good, esp. as the end or determining principle in an ethical system.
Etymology
L
ROGET THESAURUS
summum bonum
Good
N good, benefit, advantage, improvement, greatest good, supreme good, interest, service, behoof, behalf, weal, main chance, summum bonum, common weal, consummation devoutly to be wished, gain, boot, profit, harvest, boon, good turn, blessing, world of good, piece of good luck, piece of good fortune, nuts, prize, windfall, godsend, waif, treasure-trove, good fortune, happiness, goodness, utility, remedy, pleasure giving, commendable, useful, good, beneficial, well, aright, satisfactorily, favorably, not amis, all for the best, to one's advantage, in one's favor, in one's interest, so far so good, magnum bonum.Pleasure
N pleasure, gratification, enjoyment, fruition, oblectation, delectation, delection, relish, zest, gusto, satisfaction, complacency, well-being, good, snugness, comfort, ease, cushion, sans souci, without worry, mind at ease, joy, gladness, delight, glee, cheer, sunshine, cheerfulness, treat, refreshment, amusement, luxury, mens sana in corpore sano, a sound mind in a sound body, happiness, felicity, bliss, beatitude, beautification, enchantment, transport, rapture, ravishment, ecstasy, summum bonum, paradise, elysium, third heaven, seventh heaven, cloud nine, unalloyed happiness, hedonics, hedonism, honeymoon, palmy days, halcyon days, golden age, golden time, Dixie, Dixie's land, Saturnia regna, Arcadia, Shangri-La, happy valley, Agapemone, pleased, not sorry, glad, gladsome, pleased as Punch, happy, blest, blessed, blissful, beatified, happy as a clam at high water, happy as a clam, happy as a king, happy as the day is long, thrice happy, ter quaterque beatus, enjoying, joyful, hedonic, in a blissful state, in paradise, in raptures, in ecstasies, in a transport of delight, comfortable, at ease, content, sans souci, overjoyed, entranced, enchanted, enraptures, enravished, transported, fascinated, captivated, with a joyful face, with sparkling eyes, pleasing, ecstatic, beatic, painless, unalloyed, without alloy, cloudless, happily, with pleasure, with glee, one's heart leaping with joy, a wilderness of sweets, I wish you all the joy that you can wish, jour de ma vie, joy ruled the day and love the night, joys season'd high and tasting strong of guilt, oh happiness, our being's end and aim!, there is a pleasure that is born of pain, throned on highest bliss, vedi Napoli e poi muori, zwischen Freud und Leid ist die Brucke nicht weit, the bridge between joy and sorrow is not wide.For further exploring for "summum bonum" in Webster Dictionary Online