Similar words
demonio
Worth distinguishing: diablo (devil) often refers to THE Devil specifically; demonio (demon) is more general.
Similar in other languages
German
Teufel
Teufel is the German word for the same thing — both mean "devil."
Portuguese
diabo
diabo is the Portuguese word for the same thing — both mean "devil."
Practice
1 What does diablo mean?
devil
2 Fill the gap: Dicen que es un ___.
Full sentence: Dicen que es un diablo. (They say he's a devil.)
3 Which fingerprint chart matches diablo?
diablo: neutral register, common frequency, general domain, negative connotation.