キリスト教の一派であるReligious Society of Friendsの通称。quake(震える)の「震える」、すなわち神の前で震えること、またこの宗教の創始者が信者たちに「主の言葉に震えなさい」と警告?激励したことに由来する。
There is not a word in the Scripture, to put David's condition into rime and meeter: sometimes he quaked and trembled, and lay roaring all the day long, that he watered his bed with his tears: and how can you sing these conditions (but dishonour the Lord) and say all your bones quake, your flesh trembled, and that you water your bed with your tears? when you live in pride and haughtiness, and pleasure, and wantonness;" etc. ["A Brief Discovery of a threefold estate of Antichrist Now Extant in the world, etc.," an early Quaker work, London, 1653]Quaker gun (1809, American English) was a log painted black and propped up to look from a distance like a cannon, so called for the sect's noted pacifism. Philadelphia, Pennsylvania, has been known as the Quaker City since at least 1824. Related: Quakerish; Quakeress ("a female Quaker"); Quakerism.