/ˈspʌtə/
if an engine, a lamp or a fire sputters, it makes a series of short explosive sounds
If something such as an engine or a flame sputters, it works or burns in an uneven way and makes a series of soft popping sounds.
to say something in a series of quick explosive sounds, especially when you are shocked or angry:
“This is New York!” sputters an exasperated Ray.
He heard Debbie sputter a shocked insult.
+speech |~ sth to speak quickly and with difficulty, making soft spitting sounds, because you are angry or shocked 气急败坏地说；急促而语无伦次地说 SYN splutter
’W-What?’ sputtered Anna.
“什…什么？” 安娜气急败坏地说。