声こえを殺ころす

expression, godan verb (-su)

muffle one's voice; speak quietly; sob quietly

Used when someone deliberately suppresses their voice to avoid being heard, often in emotional or secretive situations.

• 彼かの女じょは声こえを殺ころして泣ないていた。

  She was crying quietly, muffling her sobs.

• 誰だれかに聞きかれないように声こえを殺ころして話はなした。

  I spoke in a muffled voice so that no one would hear.