Spiritual is a word that got to me too.
Some years after I had stopped going, I was taking a mandatory health class for college. The instructor mentioned that we need to keep ourselves healthy physically, mentally and spiritually. I rolled my eyes at the last one and he went on to define spirituality as being ok with what happens to you when you die. Believe whatever you want but just be comfortable and have resolved within yourself what may or may not happen when we die.
I immediately thought, "If that is the case, I'm so much more spiritual now then when I thought it was about how much time you put in field service each month."