|1.||to speak or say (something) in a hesitant way, esp as a result of a speech disorder or through fear, stress, etc|
|2.||a speech disorder characterized by involuntary repetitions and hesitations|
|[Old English stamerian; related to Old Saxon stamarōn, Old High German stamm]|
stammer stam·mer (stām'ər)
A speech disorder characterized by hesitation and repetition of sounds, or by mispronunciation or transposition of certain consonants, especially l, r, and s. v. stam·mered, stam·mer·ing, stam·mers
To speak with a stammer.