For someone talking excessively and nonsensically:
* മിണ്ടിത്തെറി (minditheri): This literally means "talking nonsense," and it implies someone talking foolishly or rambling on without much sense.
* വാചാലത (vaachaala tha): This means "talkativeness," and it describes someone who talks a lot, often without thinking.
* വെറുതെ പറയുന്നത് (veruthe parayunnat): This literally means "talking for no reason," and it indicates someone speaking idly or without purpose.
* വായി തുറന്ന് പറയുന്നത് (vaayi thurannu parayunnat): This means "talking with one's mouth open," and it implies someone talking loudly and possibly indiscreetly.
For someone revealing secrets or information inappropriately:
* രഹസ്യം പറയുന്നത് (rahasyam parayunnat): This means "revealing a secret," and it implies someone spilling the beans.
* വിവരം പുറത്തു പറയുന്നത് (vivaram purathu parayunnat): This means "letting out information," and it suggests someone revealing something they shouldn't.
For someone talking rapidly and incoherently:
* അതിവേഗം സംസാരിക്കുന്നത് (athivegam samsaariccunnat): This means "talking very fast," and it describes someone speaking quickly and possibly unclearly.
* കുഴപ്പം പറയുന്നത് (kuzhappam parayunnat): This means "talking confusedly," and it indicates someone speaking without a clear plan or logic.
The best translation would depend on the specific context of how "blabbering" is being used.