Nominal prices falling is the widely held definition of deflation.
Life would be somewhat easier if we could all had magic glasses that converted prices on menus in to [hours you worked to earn this purchase], but for now we all deal with fiat.
Calling deflation a drop in prices is misleading in my opinion. What really is happening is that money gets more expensive. People then start speculating on money the same way they speculate on stocks, real estate or Bitcoin.