conspicuous (adj.)youdaoicibaDictYouDict[conspicuous 词源字典]
1540s, from Latin conspicuus "visible, open to view, striking," from conspicere "to look at, observe, see, notice," from com-, intensive prefix (see com-), + specere (see scope (n.1)). Phrase conspicuous by its absence (1859) is said to be from Tacitus ("Annals" iii.76), in a passage about certain images: "sed præfulgebant ... eo ipso quod effigies eorum non visebantur."[conspicuous etymology, conspicuous origin, 英语词源]