buchonear

Mexican narco slang, derived from buchón (a low-level, ostentatious drug-trafficking associate), meaning to inform on or snitch to rival criminal groups or authorities. A very narrow, regional, and culturally loaded term tied to narco-culture vocabulary, not standard or polite Spanish.

• Lo mataron porque decían que había buchoneado a la otra banda. — They killed him because they said he'd snitched to the other gang.
• Nadie confía en él, dicen que buchonea con facilidad. — Nobody trusts him — they say he informs easily.
• En esos ambientes, buchonear puede costarte la vida. — In those circles, informing can cost you your life.

This term belongs to a specific, dangerous slang register tied to organized crime in Mexico — outside that context (and outside Mexico), delatar or soplar are the words a learner actually needs for 'to snitch.'

Often confused with delatar.