/ ˈkweɪkə(r); NAmE / noun
a member of the Society of Friends, a Christian religious group that meets without any formal ceremony and is strongly opposed to violence and war
► Quaker adjective :
a Quaker school
For more information see the Cultural Guide
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WORD ORIGIN
from quake + -er , perhaps alluding to George Fox's direction to his followers to “tremble at the name of the Lord”, or from fits supposedly experienced by worshippers when moved by the Spirit. Compare with shaker sense 2 .