Of sound or the voice: gentle, low, soft; of little power or strength; not loud, harsh, or rough. Occasionally also: thin, shrill.

Of a voice, sounds, utterances: Subdued, soft, not loud. Now archaic. (Chiefly after 1 Kings xix. 12.)

Pleasing to the ears; pleasant-sounding. Of a sound, the voice, etc.: low, quiet, subdued; not loud, harsh, or rough. Also: melodious, pleasing…

transferred. Of sound, and esp. of the voice: Indistinct, faint.

Of the voice, a sound, etc.: not loud; soft, quiet.

Hardly perceptible; indistinct; faint; spec. lacking clarity of form or outline; undefined; hardly perceptible to the eye. Now rare.

Low in volume, barely audible, soft. Obsolete.

Originally: (of a sound) weak, soft, low. In later use: (of a syllable) unstressed.

Not seen or heard so as to be clearly distinguished or discerned, or to present a clear distinction of parts; confused, blurred; hence, faint, dim…

Of sound: Subdued, low. Obsolete. rare.

Producing a feeble impression on the senses or the mind; dim, indistinct, hardly perceptible. of light, sound, odour.

That murmurs.

Rather indistinct, hardly perceptible.

Of sounds: Weak, lacking in fullness.

Of sound: Low, subdued.

Not clamorous; not loud or brash; discreet.