give sb your word
speak volumes
hear sth on / through the grapevine
get the wrong end of the stick
keep sth under your hat
keep sb posted
big mouth
catch sb's drift
lay/put your cards on the table
come clean
tell tales
get sth off your chest
understand the basic meaning
the way in which information spreads quickly from one person to another
tell people exactly what you are thinking or intending to do
tell the truth about something that you have kept secret
talk to someone about sth that has been worrying you
keep something secret
understand something completely wrongly
tell someone in authority about bad things someone else has done
used as a criticism of someone when they say things they should do
regularly give someone info about sth they are interested in
provide a lot of information
promise to do something