grumbling
noun
plural grumblings
Definition of grumbling
1
: a mutter of discontent : complaint
Operators of bars and restaurants, who hear the first-hand grumblings of customers on the boardwalk, tend to oppose the ordinance.— Kevin Robinson
2
: a growling or reverberating noise : rumbling
On a shorter timescale, researchers and governments are working together to detect the first grumblings of an earthquake and alert communities that might be affected.— Eva Botkin-Kowacki
Keep scrolling for more