the.com/stammer
When a word gets stuck in the doorway of your mouth.
means To speak with involuntary breaks, repetitions, or blocks, especially on consonants under pressure.
from From Old English stamerian, kin to Germanic words for stumbling or hindered movement — speech that trips.
Singing fixMany who stammer sing perfectly fluently.
Famous voiceKing George VI's stammer inspired an Oscar-winning film.
Not nervesIt's neurological, not a confidence flaw.