In the December Issue, Richard Bell writes that 'sacksful' is an incorrect plural of sackful. He argues that the correct plural is 'sackfuls'. However, this usage is open to debate. Oxford Dictionary states that sackfuls is the correct plural, but Merriam-Webster, Wiktionary, and other dictionary sources give both forms as acceptable plurals. It may be that placing the s at the end of *ful words is standard British usage, but I am not sure the matter is clear cut. What do others in the forum think?