1. plural of grumbling; complaints or expressions of discontent, often made in a low or muttering voice
Usage: usually plural; informal
2. low, rumbling sounds; muffled noises
Usage: usually plural

Examples

• Despite the grumblings from the team, the coach refused to change the strategy.
• We heard grumblings of thunder in the distance before the storm arrived.
• The grumblings about the new policy continued throughout the week.
• His constant grumblings about the weather annoyed everyone at the office.
• There were grumblings from the audience when the show started late.
• The grumblings of discontent grew louder as the meeting progressed.