tattletale
tat-tle-tale
noun
A person who reveals secrets or reports others' misdeeds, often to an authority.
"Don't be a tattletale and keep our secret."
Thesaurus
Synonyms: blabbermouth, tattler, taleteller, talebearer, telltale
tat-tle-tale
A person who reveals secrets or reports others' misdeeds, often to an authority.
"Don't be a tattletale and keep our secret."
Synonyms: blabbermouth, tattler, taleteller, talebearer, telltale