Related Clues:

• Grumble
• Speak unclearly
• Not say clearly
• Speak indistinctly
• Be hard to understand, in a way
• Under-one's-breath sound
• Lack of energy
• Speak under one's breath
• [Grumble, grumble, grumble]
• Say your lines a la Brando
• Speak indecipherably, perhaps
• Mutter
• Speak indistinctly or grumble
• Speak or grumble in low clear voice
• Speak indistinctly, fail to articulate