C1 verb /ˈstæmər/
stammer
ठीक से बोल न पाना
Meaning
To speak with sudden involuntary pauses and a tendency to repeat the initial letters of words.
Example
The nervous student began to stammer during his speech.
नर्वस छात्र अपने भाषण के दौरान ठीक से बोल न सका।