A combination of focusing and concentrating. Most commonly used when one cannot focustrate, or is trying to. Is similar, but not quite synonymous, to focustraight.
"Dude, shut up! I can't focustrate on my essay with you talking on you cell like that!"
Forcastinate: knowing well in advance that you will wait until the last minute to get a task done.
Phil knew that his anniversary was coming up but, just like every year, his tendency to forcastinate would mean that he would be shopping at the last minute