hear something on / through the grapevine
/ˈɡreɪp.vaɪn/idiom
to hear news informally, through gossip
слышать по сарафанному радио, ходят слухи
Русский аналог: «сорока на хвосте принесла»
Самая частая форма — I heard it on the grapevine. В британском чаще on, в американском — through.
“I heard on the grapevine that you’re moving.”
“News of the merger spread through the grapevine.”
“I heard it through the grapevine that she got the job.”