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ordinary [ordinary 词源字典]: ordinary: [14] Latin ōrdinārius meant ‘following the usual course’; it was a derivative of ōrdō, source of English order. It was originally used in English as a noun, meaning ‘someone with jurisdiction in ecclesiastical cases’, and right up until the 19th century the noun ordinary was common, with an amazingly wide range of meanings (including ‘post, mail’, ‘fixed allowance’, ‘priest who visited people in the condemned cell’, and ‘tavern’). Nowadays, however, the only (quasi-)nominal use at all frequently encountered is in the phrase out of the ordinary. English first took the word up as an adjective in the 15th century.
=> order[ordinary etymology, ordinary origin, 英语词源]
amazing (adj.): early 15c., "stupefactive;" 1590s, "dreadful;" present participle adjective from amaze. Sense of "wonderful" is recorded from 1704. Related: Amazingly.