噤若寒蟬 (gam3 joek6 hon4 sim4) — keep quiet out of fear or intimidation (lit., "as silent as a cicada in cold weather") in Cantonese
gam˗₃噤joekˍ₆若honˎ₄寒simˎ₄蟬简 噤若寒蝉
Mandarin Pinyin: jin4 ruo4 han2 chan2
Meaning of 噤若寒蟬
nounkeep quiet out of fear or intimidation (lit., "as silent as a cicada in cold weather")