Английский Этимологический словарь - good (adj.)

- O.E. god (with a long "o") "having the right or desirable quality," from P.Gmc. *gothaz, from PIE base *ghedh- "to unite, be associated, suitable." Irregular comparatives (better, best) reflect a widespread pattern, cf. L. bonus, melior, optimus. Goods "property" first recorded c.1280, but singular in the same sense was in O.E. Good-bye is 1570s, from godbwye, contraction of God be with ye, infl. by good day, good evening, etc. Good-for-nothing is from 1711; good-looking is from 1780; good-natured first recorded 1577. Good sport is from 1917; good to go is military slang from Persian Gulf War (1991). Goody "something tasty" is 1745; adj. use for "sentimentally proper" is 1830. Goody also used since 1559 as a shortened form of goodwife, a term of civility applied to a married woman in humble life; hence Goody Two-shoes, name of heroine in 1760s children's story who exulted upon acquiring a second shoe.