Low or subdued manner of speaking.

Muted speech often expressing discontent.

Quietly spoken words, usually unintelligible.

Soft murmurs in a conversation context.

Speech delivered below normal volume levels.

In a low voice, barely audible.

Softly muttered or whispered quietly.

Spoken while trying to remain unnoticed.

Uttered softly, often in secrecy or annoyance.

Quietly expressed without full volume articulation.