murmuring

also known as: grumbling, muttering

The Hebrews’ expressions of discontent in the wilderness, called forth the displeasure of God, which was only averted by the earnest prayer of Moses (Numbers 11:33-34; 12; 14:27, 30-31; 16:3; 21:4-6; Psalm 106:25).

Murmuring was forbidden by Paul (1 Corinthians 10:10).