Uninstalling is the inverse of installation.

In the original Greek of Euclid's Elements the corollaries to the propositions are called porisms.

Energy has seldom been found where we need it when we want it. Ancient nomads, wishing to ward off the evening chill and enjoy a meal around a campfire, had to collect wood and then spend time and effort coaxing the heat of friction out from between sticks to kindle a flame.

His gait was something between a slouch and a skulk.