1. 鸣不平的：grumbler 爱抱怨的人 | grumbling 鸣不平的 | grumblingly 报怨着

2. 发牢骚：85. 谈论吸烟Smoking | 86. 发牢骚Grumbling | 87. 旅游及其他 Traveling and Others

3. (抱怨)：You've improved no end .你一直在进步. | 4grumbling,(抱怨) | That wasn't very good .那真不太好.

4. 嘀咕：4、挑食 picky eating; choosy about food | 5、嘀咕 grumbling | 6、容易(招误会) be apt to

6. grumbling什么意思

noun

1. a complaint uttered in a low and indistinct tone

Synonym: grumblemurmurmurmuringmuttermuttering

2. a loud low dull continuous noise

e.g. they heard the rumbling of thunder

Synonym: rumblerumblinggrumble