Can anyone help me out with the following sentences: Sentence 1: Everyone is grievously underestimating the effects of deflation.
I looked up what grievously means and it says very serious and often causing great suffering or pain. So what does the sentence mean-everyone is seriously underestimating the effects of deflation? Sentence 2 :Banks are overstuffed with dud loans. "dud" means useless but why are the loans useless?