Be-ceorian

According to the Old English Dictionary:

be-ceorian

Substitute: to murmur at, complain of:--Gif hé hit mid múðe beceorað ore si murmuraverit, R. Ben. 21, 1. His ríce men hit mǽndon, and þá earme men hit beceorodan, Chr. 1086; P. 221, 13. be-ceorian