The Rice University Neologisms Database

an intensifier, very To those two people who use it (so far) adding .5 to the end of the word means that that word now means 150& of what it used to. So fast.5, for example, is 50% faster than normal fast. This slang developed between two friends, so it may spread very slowly, or only the two friends will continue to use it. I think the development of the suffix was influenced by computers, because .5 is very easy to type. .5 is said as well as typed, however.