The FEW entry also lists the A-N variant spelling poinousement from Brandin’s edition of Fouke le fitz Waryn (27.12). That reading has since been rejected in Fouke
ants 20.34 and replaced with pourousement.
adv.
1painfully, causing physical suffering:
(
MS: c.1330-40
)
Je te renk graces, douz Seigneur Jhesu Christ, qe [...] soffris tes mayns e tes piés de grosse clous si penousement trespersier e atachier en cele Croys
258
[peinousement] (c.1330-40)