stotter
/ˈstɒtər/Definitions
1. noun
A person who stutters or has difficulty speaking due to a speech disorder.
“The young boy was a stotter, and it took him a while to get the words out.”
2. verb
To speak with a stutter, or to cause someone to stutter by speaking quickly or unclearly.
“The rapid-fire questions caused the witness to stotter and stumble over his answers.”