While in other stories grumbling could be the warning sign of thunder, in The Hobbit it is always the sound of complaint and earns the “low” tag.

• 02.029 “To think it will soon be June!” grumbled Bilbo,
• 02.039 (and a good deal of grumbling
• 05.149 so soon they went back grumbling
• 06.006 The dwarves were grumbling,
• 06.043 grumbled Bombur;
• 06.057 in spite of his grumbling.
• 07.108 and he was grumbling about it,
• 07.136 The dwarves were inclined to grumble at this,
• 08.026 Don’t start grumbling against orders,
• 08.029 (still grumbling)
• 08.066 he grumbled,
• 08.125 and were not merely grumbling.
• 09.032 and started grumbling loudly
• 09.035 and it was no good grumbling
• 09.038 and grumbled like a large dog
• 09.044 he grumbled.
• 09.066 some grumbled.
• 10.039 There were no more groans or grumbles.
• 12.034 they began to grumble at the hobbit,
• 12.035 If there is any grumbling to be done,
• 13.056 grumbled the hobbit.
• 15.060 he grumbled to himself,
• 16.010 grumbled the fat dwarf.