Thriven here appears to derive from the sense meaning ‘advanced in growth’, but thro is not found– instead it was used in the 14th, 15th, and 16th centuries to mean ‘stubborn’. Together, as ‘thriven and thro’, they were an epithet used in alliterative poetry to call someone excellent.
这里thriven的含义由‘快速生长’而来，但是并没发现thro从何处演化而来——相反，在14、15、16世纪它意为‘固执的’。‘thriven and thro’放到一起，在头韵诗歌里用来称赞某人是卓越的。
Although the earliest known sense of gradely probably referred to people and meant ‘ready’or‘prompt’, by 1400 the word could be used to refer to objects – to label them awesome. You might not be understood if you said this in London or Cornwall, but it’s still wide in use in the north of England.
Around 1560, according to current research – jelly may be related in some way to jolly, although the phonetic change has no parallel. The use is also a little different – describing someone excellent, but with a high opinion of themselves.
The earliest sense of the adjective gallows means ‘fit for the gallows’ – that is, deserving to be hanged. In the same way that wicked and bloody have come to mean their reverse, gallows became a slang adjective meaning ‘excellent ’, first found in 1789.
From the adverb jam or jam-up (meaning ‘closely, in close contact ’) developed the adjectival meaning ‘excellent, perfect, thorough’, in colloquial use. One could thus, conceivably, jam up jam-up jam, if you were stacking shelves of awesome strawberry preserve.
The adjective boss, meaning ‘excellent, masterly’, developed earlier than one might imagine from attributive use of the noun in collocation with occupational titles, e.g. ‘boss shoemaker’, ‘boss carpenter’, etc.— the first truly adjectival use recorded in the OED is from 1881: ‘No country in the world could make such a boss-show as the United States.’
This Australian and New Zealand slang adjective, of unknown origin, also appears in the form boscar and boshter. More familiar will be the similar bonzer (also meaning ‘extremely good’), which – it has been suggested – may be an alteration of bonanza.
Although dating back to the 19th century with the sense ‘complete, thorough’, this adjective later appeared in American slang as a synonym for awesome. The word was greatly popularized by the teen film Bill and Ted’s Excellent Adventure (1989).