sputtering

noun
  1. the action or sound of making soft explosive noises
verb
  1. making a series of soft explosive sounds
  2. Usage: present participle of sputter
  3. speaking in a confused or angry way with short bursts of words
  4. Usage: present participle of sputter
  5. functioning irregularly or failing intermittently
  6. Usage: present participle of sputter

Examples