The University of Copenhagen’s Dictionary of Old Norse Prose separates a 54-citation neuter noun from a one-citation masculine analysis—and flags the lone masculine assignment as possibly an elementary error. A directly inspected c.1150-1200 manuscript visibly preserves Hatr, but a visible token cannot settle gender by itself. The reveal is not that Old Norse had two equally secure hate nouns; it is that rigorous lexicography preserves the fracture instead of hiding it.