v.
 talk with continued involuntary repetition of sounds, especially initial consonants. 
▸(of a machine or gun) produce a series of short, sharp sounds.
n.
 a tendency to stutter while speaking.
 
  Derivative
  
    - stutterer n.
  - stuttering adj.
  - stutteringly adv.
 
   
  Etymology
  C16: frequentative of dial. stut, of Gmc origin.