Merriam-Webster Collegiate Dictionary - good

 I. adjective  (better; best)  Etymology: Middle English, from Old English god; akin to Old High German guot ~, Middle High German gatern to unite, Sanskrit gadhya what one clings to  Date: before 12th century  1.  a.  (1) of a favorable character or tendency ~ news  (2) bountiful, fertile ~ land  (3) handsome, attractive ~ looks  b.  (1) suitable, fit ~ to eat  (2) free from injury or disease one ~ arm  (3) not depreciated bad money drives out ~  (4) commercially sound a ~ risk  (5) that can be relied on ~ for another year ~ for a hundred dollars always ~ for a laugh  (6) profitable, advantageous made a very ~ deal  c.  (1) agreeable, pleasant had a ~ time  (2) salutary, wholesome ~ for a cold  (3) amusing, clever a ~ joke  d.  (1) of a noticeably large size or quantity ; considerable won by a ~ margin a ~ bit of the time  (2) full waited a ~ hour  (3) — used as an intensive a ~ many of us  e.  (1) well-founded, cogent ~ reasons  (2) true holds ~ for society at large  (3) deserving of respect ; honorable in ~ standing  (4) legally valid or effectual ~ title  f.  (1) adequate, satisfactory ~ care — often used in faint praise his serve is only ~ — Frank Deford  (2) conforming to a standard ~ English  (3) choice, discriminating ~ taste  (4) containing less fat and being less tender than higher grades — used of meat and especially of beef  2.  a.  (1) virtuous, right, commendable a ~ person ~ conduct  (2) kind, benevolent ~ intentions  b. upper-class a ~ family  c. competent, skillful a ~ doctor  d.  (1) loyal a ~ party man a ~ Catholic  (2) close a ~ friend  e. free from infirmity or sorrow I feel ~  • ~ish adjective Usage:  An old notion that it is wrong to say “I feel ~” in reference to health still occasionally appears in print. The origins of this notion are obscure, but they seem to combine someone's idea that ~ should be reserved to describe virtue and uncertainty about whether an adverb or an adjective should follow feel. Today nearly everyone agrees that both ~ and well can be predicate adjectives after feel. Both are used to express ~ health, but ~ may connote ~ spirits in addition to ~ health.  II. noun  Date: before 12th century  1.  a. something that is ~  b.  (1) something conforming to the moral order of the universe  (2) praiseworthy character ; ~ness  c. a ~ element or portion  2.  a. advancement of prosperity or well-being the ~ of the community it's for your own ~  b. something useful or beneficial it's no ~ trying  3.  a. something that has economic utility or satisfies an economic want  b. plural personal property having intrinsic value but usually excluding money, securities, and negotiable instruments  c. plural cloth  d. plural something manufactured or produced for sale ; wares, merchandise canned ~s  e. plural, British freight  4. ~ persons — used with the  5. plural  a. the qualities required to achieve an end  b. proof of wrongdoing didn't have the ~s on him — T. G. Cooke  III. adverb  Date: 13th century  1. well he showed me how ~ I was doing — Herbert Gold  2. — used as an intensive a ~ 200 pounds a ~ long time Usage:  Adverbial ~ has been under attack from the schoolroom since the 19th century. Insistence on well rather than ~ has resulted in a split in connotation: well is standard, neutral, and colorless, while ~ is emotionally charged and emphatic. This makes ~ the adverb of choice in sports “I'm seeing the ball real ~” is what you hear — Roger Angell. In such contexts as listen up. And listen ~ — Alex Karras lets fly with his tomatoes before they can flee. He gets Clarence ~ — Charles Dickinson ~ cannot be adequately replaced by well. Adverbial ~ is primarily a spoken form; in writing it occurs in reported and fictional speech and in generally familiar or informal contexts.