A word used to describe someone who lets out a secret or promise, breaking the persons trust during the process.

(this word was used against my brother from my 8 year old sister, when my brother snooped in her diary and let out one of her secrets during dinner).
Alessio: "Sometimes I pretend to sleep on the couch..."
Sienna: Why'd you read it? You're such a teller-about!
Alessio: *laughs*
by sherloidbeckyg October 11, 2017
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