cantinflear

To talk nonsensically at length while saying nothing of substance — a verb the RAE officially added to its dictionary in 2011, coined directly from Cantinflas, the stage name of legendary Mexican comic actor Mario Moreno (1911–1993), famous for rambling, circumlocutory speech that sounded eloquent but meant little.

• El político cantinfleó toda la entrevista sin responder nada. — The politician rambled through the whole interview without answering anything.
• Deja de cantinflear y dime la verdad. — Stop talking in circles and tell me the truth.
• Su discurso fue puro cantinflear. — His speech was pure double-talk.

This isn't neutral for 'talking a lot' — it specifically implies the speech is evasive, incoherent, or empty of real content, so it carries a mocking edge; hablar mucho is the neutral alternative if you don't mean to imply nonsense.

• quote Cantinflas (Mario Moreno) — The verb cantinflear is derived directly from Cantinflas, the stage persona of Mexican comic actor Mario Moreno (1911–1993), whose rambling, evasive style of speech in his films inspired the word; the RAE formally added cantinflear to its dictionary in 2011.