also gob-smacked, "flabbergasted, amazed, astounded," literally "smacked in the mouth," by 1936, U.K. slang, from gob (n.2) "mouth" + past participle of smack (v.).
go-between
Gobi
goblet
goblin
gobo
gobsmacked
goby
go-by
go-cart
god
god-awful
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