chanelar

An archaic loanword from caló (the language of Spanish Roma) meaning to understand, know, or grasp — attested in Spanish dictionaries since the 19th century but essentially unused in living speech today. Comes from caló chanar, itself from Romani džan-, 'to know.'

• No chanelo nada de lo que dices. — I don't understand anything you're saying.
• ¿Chanelas el plan o te lo explico otra vez? — Do you get the plan, or should I explain it again?
• Al fin chaneló de qué se trataba todo. — He finally understood what it was all about.

Using chanelar expecting a modern speaker to recognize it — it's a linguistic curiosity today, essentially archaic; entender or comprender are what any contemporary listener expects.

Often confused with entender.