2 Words to use with stammer

Even as he spoke, the sound of distant firing fell upon the ears of the party and the unmistakable stammer-hammer racket of the maxim.

But on this morning, again a sudden rush of tears had streamed down her cheeks, and she had begun to stammer words without any connection; which seemed to prove that in the midst of her senile exhaustion and the incurable torpor of madness, the slow induration of the brain and the limbs was not yet complete; there still were memories stored away, gleams of intelligence still were possible.

2 Words to use with  stammer