The bulk update request #11388 is active.

change category slightly (7) -> invalid

Reason: While slightly it isn't tagged on a lot of post currently.

It has been added a fair amount in the past.
https://e621.net/post_versions?commit=Search&search%5Btags_added%5D=slightly

And there is a good chunk of useful slightly tags to use
https://e621.net/tags?commit=Search&search%5Bhide_empty%5D=1&search%5Bname_matches%5D=slightly_%2A&search%5Border%5D=count

EDIT: The bulk update request #11388 (forum #454440) has been approved by @spe.

Perhaps this should be invalid category rather than disambiguation? This seems more like a typo in most cases (forgot an underscore, usually) rather than an ambiguous term.

spe said:
Perhaps this should be invalid category rather than disambiguation? This seems more like a typo in most cases (forgot an underscore, usually) rather than an ambiguous term.

That's actually a better idea.
I've updated the BUR to reflect it.

The bulk update request #11388 (forum #454440) has been approved by @spe.