To back off, to go away, to beat it, to piss off.
Inherited from Ottoman Turkish دفع اولمق (defʿ olmaḳ), from Arabic دَفْع (dafʕ), equivalent to def (“an act of pushing away, repelling, expelling”) + olmak (“to be, to become”).
Practica hablar y memorizar " defolmak " y muchas otras palabras y oraciones en turco .