shuō​sān​dào​sì

criticize

说三道四 (說三道四) shuō​sān​dào​sì
criticize idiom
to make thoughtless, irresponsible, or meddling remarks about something or someone

Since you weren't involved in this project, don't stand there and gossip.

Frequency

Movie subtitles
1.64 per million appears in 1% of films
Written text
0.947 per million

Sources

Definitions
CC-CEDICT