Thread:User talk:CodeCat/Reinhard, Reynard, and PGmc/reply

It's a neuter a-stem which probably meant "advice" or something similar. But it's the same word as in and also found alone in  (itself a neuter plural) so perhaps as a plural it had a religious meaning as well. Some of the later Frankish-influenced forms may also derive from through folk etymology once the original word was no longer understood. I believe that is probably what happened in the non-Ingvaeonic languages, because they never would have lost the -g- as the OHG descendant shows.