Dictionary / Vocabulary / 流言飛語
りゅうげんひご
false rumour (rumor); groundless rumour; canard
Also written 流言蜚語
流言飛語に惑わされるべからず、とはいうものの、言うは易く行うは難し、と思わない？
They say you shouldn't take rumors seriously, but that's easier said than done.