Hum
Hum noun - A monotonous sound like that of an insect in motion.
Usage example: we heard the hum of an outboard motor and a few minutes later the small craft came into sight
Mutual synonyms
Cite this Source
Rustle and Hum. (2016). Retrieved 2026, July 21, from https://thesaurus.plus/related/hum/rustle
Hum & Rustle. N.p., 2016. Web. 21 Jul. 2026. <https://thesaurus.plus/related/hum/rustle>.
Rustle or Hum. 2016. Accessed July 21, 2026. https://thesaurus.plus/related/hum/rustle.
Google Ngram Viewer shows how "hum" and "rustle" have occurred on timeline