Sly
Sly adjective - Given to acting in secret and to concealing one's intentions.
Usage example: why, you sly fellow! I had no idea you were planning my birthday party
Sneaking is a synonym for sly in honest topic. In some cases you can use "Sneaking" instead an adjective "Sly", when it comes to topics like clever, secret, stealthy.
Sneaking
Sneaking adjective - Given to acting in secret and to concealing one's intentions.
Usage example: never let one of those sneaking salespeople into your house
Sly is a synonym for sneaking in stealthy topic. You can use "Sly" instead an adjective "Sneaking", if it concerns topics such as honest, underhand.
Mutual synonyms
Cite this Source
Sneaking and Sly. (2016). Retrieved 2026, July 21, from https://thesaurus.plus/related/sly/sneaking
Sly & Sneaking. N.p., 2016. Web. 21 Jul. 2026. <https://thesaurus.plus/related/sly/sneaking>.
Sneaking or Sly. 2016. Accessed July 21, 2026. https://thesaurus.plus/related/sly/sneaking.
Google Ngram Viewer shows how "sly" and "sneaking" have occurred on timeline