“Scot” you may know. A Scot (escocés) is a person who is Scottish (escocés). The male is a Scotsman (escoces) and the female is a Scotswoman (escocesa).
“Scot-free” is a different idea. It is a compound (compuesto) adjective, and it has two related meanings. Examine these:
Someone can “get off scot-free” (sale impune),which means that he is unpunished for his crime or wrongdoing (maldad, pecado).
Someone could be unhurt in an accident and escapes scot-free (sale iluso).
