yfast, yvast [fast v.2] fasted. 971Blickl. Hom. 205 Ðære nihte þe hie þæt fæsten ᵹefæst hæfdon.c1275yuast [see fast v.2 3].13..K. Alis. 2419 (Laud MS.) As a wolf, Þat fele dawes had yfast.c1380Sir Ferumb. 2822 Gyoun þanne was teynt & paal so longe he hadde yuaste.