[stam.mer] vb stam.mered ; stam.mer.ing [ME stameren, fr. OE stamerian; akin to OHG stamalon to stammer, ON stemma to hinder, damn up--more at stem] vi (bef. 12c): to make involuntary stops and repetitions in speaking: halt--compare stutter ~ vt: to utter with involuntary stops or repetitions -- stammer n -- stam.mer.er n
STAMMER
Meaning of STAMMER in English
Merriam-Webster English vocab. Английский словарь Merriam Webster. 2012