不声不响
bù​shēng​bù​xiǎng

silently

Senses

不声不响/ 不聲不響 bù​shēng​bù​xiǎng silently

making no sound; without speaking; wordless; taciturn

不声不响/ 不聲不響 bù​shēng​bù​xiǎng stealthily

to do something without attracting attention; quietly or behind the scenes; without making it known

References

antonym 不声不响/不聲不響 → 大喊大叫/大喊大叫
antonym 大喊大叫/大喊大叫 → 不声不响/不聲不響