Select the most appropriate synonym of the given word.

Grumble

Groan

The most appropriate synonym of the given word grumble is groan.

• Grumble means "to complain in a low, indistinct voice."
• Call means "to utter a loud, clear sound in order to attract attention or to summon someone."
• Ring means "to produce a clear, resonant sound."
• Grin means "to smile broadly, showing the teeth."
• Groan means "to make a deep, prolonged sound of pain or discomfort."