auctionyoudaoicibaDictYouDict[auction 词源字典]
auction: [16] The etymological idea underlying auction is that of ‘increasing’ – as the sale proceeds, the price offered goes up. The word comes from Latin auctiō ‘increase’, a noun derived from auct-, the past participial stem of the verb augēre ‘increase’ (source of English augment [15] and author, and related to auxiliary [17] and eke). The sense ‘auction sale’ was already present in Latin.
=> augment, august, author, auxilliary, eke, wax[auction etymology, auction origin, 英语词源]
sundae (n.)youdaoicibaDictYouDict
1897, American English, thought to be an alteration of Sunday, perhaps re-spelled in deference to religious feelings; but the reason for the name is uncertain; perhaps "ice cream left over from Sunday, on sale later." For a fuller account of the speculations, see H.L. Mencken, "The American Language," Supplement I (1945), pp.376-7.