stuttered

/S T AH1 T ER0 D/
verb
  1. 1

    To speak with a spasmodic repetition of vocal sounds.

    โ€œHe stuttered a few words of thanks.โ€

  2. 2

    To exhaust a gas with difficulty

    โ€œThe engine of the old car stuttered going up the slope. I was stuttering after the marathon.โ€

Synonyms

Source: https://en.wiktionary.org/wiki/stutter, https://en.wiktionary.org/wiki/stuttered