The odd thing about the word is that its only currency, at least in its non-technical sense, is among those who should most abhor it, the people of sufficient education to realize its bad formation; it is at once a monstrosity in its form & a pedantry in its use. [Fowler]
来自拉丁语ore rotundo,圆嘴，来自ore,嘴，词源同oral,rotundo,圆的，词源同round,rotate.引申词义嗓音洪亮的。