See ñero , compa .
ARO COMPA Aro is Companion Apheresis and Compa is Companion Apócope or Compadre. It is called colloquially VESRE or VERSE to invest or mention syllables backwards from normal, common in the Argentine lunfardo and that was popularized in Argentina and Uruguay by the tangueros. The literary figure for the inversion of phonemes is called Metastases (stuata by statue , chochamu by boy, croquette cocktail)
Aro is used as a synonym for naco, vulgar, frivolous, fachoso, disrespectful, in the center of Mexico.