Board Thread:Questions and Answers/@comment-24034641-20131023095852/@comment-6697950-20131026075946

Þu is more like "thou". It is old Norse, remember? :D

And, as TUSF said, we were hoping that the dub translators would have at the very least contacted the anime studio or Reki about how  did they come up with the spell words. Would have helped us with spells that don't have WoPs (like night vision) or have very blurry WoPs (like the one that turns you into a random monster).