[f. as prec. + -ING2.] That espies. Hence † Espyingly adv. (in 4 aspyingly, aspiendeli), in a spying manner; insidiously.
1382. Wyclif, 2 Kings x. 19. Forsothe Hieu dydde this aspyingly. Ibid., Ecclus. xxxii. 19 [15]. Who secketh the lawe, shal be fulfild of it; who aspiendeli doth, shal be sclaundrid in it.
1580. Hollyband, Treas. Fr. Tong, En espiant, espyingly.