α. Middle English quape, Middle English qwape, Middle English qwappe, Middle English–1500s quappe, 1600s (1700s English regional (Gloucestershire)) (1800s Welsh English) quapp, 1800s quap.
β. 1600s 1800s– quop, 1800s– qwop (English regional (Worcestershire)).
See also quob v.