abribonar

A rare, mostly reflexive verb (abribonarse) meaning to turn into a bribón — a rogue, layabout, or ne'er-do-well. Colloquial and old-fashioned; you'll find it in older literature more than in contemporary speech, where the phrase hacerse un vago would be used instead.

• Los vecinos decían que el chico se había abribonado desde que dejó la escuela. — The neighbors said the boy had turned into a good-for-nothing since he left school.
• La novela retrata a un joven que se abribona en las calles de la capital. — The novel portrays a young man who turns into a rogue on the streets of the capital.
• Tanto ocio lo fue abribonando poco a poco. — So much idleness gradually turned him into a layabout.

This verb is rare enough that using it in ordinary conversation will sound bookish or archaic — vago(a) or hacerse un vago communicate the same idea in everyday Spanish.