Obs. rare. [f. as prec. + -NESS.] Forgetfulness.
1387. Trevisa, Higden (Rolls), I. 5. Forȝetingnes all wey kypinge þe craft of a stepdamme, he is enmy of mynde. Ibid., II. 323. Moyses, as a man þat was konnynge in þe cours of worchynge of þe sterres and planetes, made tweie rynges, oon of mynde and anoþer of forȝetyngnesse.