The word "sputterings" has several synonyms that can be used in its place. "Stammerings" refers to halting or broken speech, while "spatterings" describes the scattering of small drops of liquid or mud. "Splutterings" is another similar term that relates to inconsistent, explosive sounds or speech. "Utterances" and "expressions" can be used to describe the spoken or written words of an individual, and "mutterings" can be used to describe low, indistinct speech. Lastly, "murmurs" refers to the soft, low sounds of a person's voice, often used in hushed tones. Overall, there are many synonyms for the word "sputterings" that can add variety and nuance to written or spoken language.