rumbling

A muted sound of complaint or discontent. / A deep low noise.

Japanese Meaning

控えめな不満や不平を示す低いうなり声、または低く深い音

There was a faint rumbling in the crowd as the announcement was made.

発表が行われると、群衆の中でかすかな不満のざわめきが起きた。

Sense（1）

A muted sound of complaint or discontent.

The rumblings of the masses precede the crumbling of the state.

Sense（2）

A deep low noise.

The rumbling of distant thunder echoed from the hilltop.

rumblings

（ plural ）