good (adj.) Look up good at Dictionary.com
O.E. god (with a long "o") "having the right or desirable quality," from P.Gmc. *gothaz (cf. O.N. gošr, Du. goed, Ger. gut, Goth. gožs), originally "fit, adequate, belonging together," from PIE base *ghedh- "to unite, be associated, suitable" (cf. O.C.S. godu "pleasing time," Rus. godnyi "fit, suitable," O.E. gędrian "to gather, to take up together"). Irregular comparatives (better, best) reflect a widespread pattern, cf. L. bonus, melior, optimus. First record of good day is from c.1200. Goods "property" first recorded late 13c., but singular in the same sense was in O.E. The good neighbours is Scot. euphemism for "the fairies" (1580s). Good-for-nothing is from 1711; good-looking is from 1780; good-natured first recorded 1570s. Good sport is from 1917; good to go is attested from 1989.