User blog comment:Omega natsu2/Chapter 369: The Place Prayers Reach, Predictions./@comment-31.132.65.50-20140129025714/@comment-7418318-20140129180805

Sorry to break it to you, but the dictionary doesn't care what concepts you have in mind. The word just means what it means, not what you want it to mean.

Yes, when he almost killed himself, he was a lot weaker than while being split and yes it was both physically and magically as opposed to the purely magical weakening, but compared to his full power, his overall condition was still weakened in both cases. Just because it was worse in one case doesn't make the word "weakened" no longer apply to the other.