grumble-v; 2 Senses

Sense Number 1: show one's unhappiness; complain

Commentary: Syntax Includes: NP1[agent[human]] GRUMBLE (NP2[topic]) NP1[agent[human]] GRUMBLE PP NP1[agent[human]] GRUMBLE ADVP

She grumbles more than anyone I know.
'Oh, quit grumbling, we'll be there soon.'
'Yes!' He grumbled, 'I'll give you a damn cookie.'
Marge grumbled a response to Homer.
The sportscaster grumbled that the game wasn't going well.

VerbNet: complain-37.8,manner_speaking-37.3
FrameNet: Complaining
PropBank: grumble.01
WordNet 3.0 Sense Numbers: 1, 2

Sense Number 2: utter or emit low rumbling sounds

Commentary: Syntax Includes: NP1 GRUMBLE PP[directional] NP1[agent] GRUMBLE NP2[proposition]
NOTE: In rare cases NP1 can be [human] but there must be no mention or implication that NP1 is unhappy. This is shown in sentence 4 where it's a MANNER of speaking (like whisper, ask etc).

The stones grumbled down the hill.
My cat's stomach grumbles a lot, maybe I should feed her more.
The clouds grumbled and rumbled.
The giant grumbled 'Fe Fi Fo Fum'.

VerbNet: manner_speaking-37.3
FrameNet: NM
PropBank: NM
WordNet 3.0 Sense Numbers: 3, 4