n. one who reveals secrets, one who spreads rumors

n. gossiper, informer, tattler, talebearer

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Noun
1. someone who gossips indiscreetly
(synonym) tattletale, tattler, taleteller, talebearer, blabbermouth
(hypernym) gossip, gossiper, gossipmonger, rumormonger, rumourmonger, newsmonger

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Adjective
1. disclosing unintentionally; "a telling smile"; "a telltale panel of lights"; "a telltale patch of oil on the water marked where the boat went down"
(synonym) revealing, telling, telltale(a)
(similar) informative, informatory

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