telltale
Pronunciation:
/ˈtɛlteɪl/noun
Definitions
One who divulges private information with intent to hurt others.
Synonyms:blabbermouthgossiprumormongertalebearerTattletale; squealer.
An indicator, such as a warning light, that serves to warn of a hazard or problem.
Something that serves to reveal something else.
Example: The telltale was the lipstick on his shirt collar.
adjective
Definitions
Revealing something, especially something not intended to be known.
Example: He blushed when he approached, a telltale sign that he was happy to see him.