Power Thesaurus. (2015). scavenger thesaurus. Retrieved October 15, 2015, from http://www.powerthesaurus.org/scavenger/antonyms.
Heat transfer can never be stopped, it can only be slowed or reflect away. The purpose of insulation is to impede this natural process. In hot weather, you want to stop heat from being transferred into the building, and in cold weather you want to stop it from being transferred out.
In short: the hotter you make your home and the colder it is outside, the more heat you're going to lose. To reduce that problem, you need to understand the three different ways in which heat can travel: called conduction, convection, and radiation. Sometimes you'll see these referred to as three forms of heat transfer. Conduction