α. early Middle English o nihhtess ( Ormulum), Middle English onightes, Middle English o nites, Middle English o nyghtes.
β. Middle English a-niȝtes, Middle English a niȝttes, Middle English a nihtes, Middle English a nyghtes, Middle English anyghtes, Middle English anyȝtis, Middle English anyȝttes, Middle English–1600s anightes, Middle English– a nights, 1500s a nyttes, 1500s–1600s a nightes, 1500s– anights, 1600s– a-nights.