Quiet vs. Mumble — What's the Difference?

Making little or no noise

To utter indistinctly by lowering the voice or partially closing the mouth

Carried out discreetly, secretly, or with moderation

To chew slowly or ineffectively without or as if without teeth.

Absence of noise or bustle; silence; calm

To speak words indistinctly, as by lowering the voice or partially closing the mouth.

Make or become silent, calm, or still

To chew food slowly or ineffectively, as if with the gums.

Making or characterized by little or no noise

A low indistinct sound or utterance.

Free of turmoil and agitation; calm

To speak unintelligibly or inaudibly; to fail to articulate.

Providing or allowing relaxation; restful; soothing

To chew something gently with closed lips.

Not showy or bright; subdued

A quiet or unintelligible vocalization; a low tone of voice.

Restrained, as in style; understated

To speak with the lips partly closed, so as to render the sounds inarticulate and imperfect; to utter words in a grumbling indistinct manner, indicating discontent or displeasure; to mutter.

Out of public scrutiny; known or discussed by few

To chew something gently with closed lips.

The quality or condition of being quiet

To utter with a low, inarticulate voice.

To cause to become quiet

To chew or bite gently, as one without teeth.

To make (a title) secure by freeing from uncertainties or adverse claims as to the ownership.

To suppress, or utter imperfectly.

To become quiet

Talk indistinctly; usually in a low voice

With little or no sound; free of disturbing noise.

Grind with the gums; chew without teeth and with great difficulty;

Having little motion or activity; calm.

Not busy, of low quantity.

Not talking much or not talking loudly; reserved.

Not showy; undemonstrative.

(software) Requiring little or no interaction.

(transitive) To cause (someone or something) to become quiet.

(intransitive) To become quiet or calm.

The absence of sound; quietness.

The absence of movement; stillness, tranquility.

The absence of disturbance or trouble; peace, security.

Be quiet.

In a state of rest or calm; without stir, motion, or agitation; still; as, a quiet sea; quiet air.

Free from noise or disturbance; hushed; still.

Not excited or anxious; calm; peaceful; placid; settled; as, a quiet life; a quiet conscience.

Not giving offense; not exciting disorder or trouble; not turbulent; gentle; mild; meek; contented.

Not showy; not such as to attract attention; undemonstrative; as, a quiet dress; quiet colors; a quiet movement.

The quality or state of being quiet, or in repose; as an hour or a time of quiet.

Freedom from disturbance, noise, or alarm; stillness; tranquillity; peace; security.

To stop motion in; to still; to reduce to a state of rest, or of silence.

To calm; to appease; to pacify; to lull; to allay; to tranquillize; as, to quiet the passions; to quiet clamors or disorders; to quiet pain or grief.

To become still, silent, or calm; - often with down; as, be soon quieted down.

A period of calm weather;

An untroubled state; free from disturbances

The absence of sound;

A disposition free from stress or emotion

Become quiet or quieter;

Make calm or still;

Characterized by an absence or near absence of agitation or activity;

Free of noise or uproar; or making little if any sound;

Not showy or obtrusive;

In a softened tone;

Without untoward incident or disruption;

Free from disturbance;

Of the sun; characterized by a low level of surface phenomena like sun spots e.g.

With little or no activity or no agitation (`quiet' is a nonstandard variant for `quietly');