stop — to cease from, leave off, or discontinue: to stop running.
leave — to go out of or away from, as a place: to leave the house.
fail — to fall short of success or achievement in something expected, attempted, desired, or approved: The experiment failed because of poor planning.
lose — to come to be without (something in one's possession or care), through accident, theft, etc., so that there is little or no prospect of recovery: I'm sure I've merely misplaced my hat, not lost it.
decrease — When something decreases or when you decrease it, it becomes less in quantity, size, or intensity.
reduce — to bring down to a smaller extent, size, amount, number, etc.: to reduce one's weight by 10 pounds.