Stutter
From Tardis Wiki, the free Doctor Who reference
A stutter was to talk with continued involuntary repetition of sounds.
Astonished at the sight of the Fifth Doctor regenerating, Peri Brown stuttered and said "three Is in one breath", to which the newly regenerated Sixth Doctor remarked made her sound like a "rather egotistical young lady." (TV: The Caves of Androzani)
