noun. One who tattles on others; an informer or talebearer.

adjective. Revealing; telltale.

adjective. telltale, giveaway

noun. One who tattles (reports others' wrongdoings), often by a child seeking attention.

noun. One who gossips, often for the sake of attention.

noun. someone who gossips indiscreetly

"The penalty for such a violation was for the immediate surrender of the paper, which was soon retrieved by the stealth "tattletale" who was hovering on the periphery as his rival was subjected to disciplinary action."

gossip  gossiper  gossipmonger  newsmonger  rumormonger  

11-foot  110-block  5-50  bellybutton  boskhide  

a tale-bearing animal  betrayer  blab  blabber  blabberer