superstition
nounExcessive exactness or rigor in religious opinions or practice; extreme and unnecessary scruples in the observance of religious rites not commanded, or of points of minor importance; excess or extravagance in religion; the doing of things not required by God, or abstaining from things not forbidden; or the belief of what is absurd, or belief without evidence. Superstition has reference to god, to religion, or to beings superior to man.