Collins Russian Dictionary 2nd Edition © HarperCollins Publishers 2000, 1997:
sufferance [ˈsʌfərns] n
she hadn't wanted him to go, so he was only there on sufferance она́ не хоте́ла отпуска́ть его́, он был там, причиня́я ей страда́ния
* is used to mark translations which have irregular inflections. The Russian-English side of the dictionary gives inflectional information.