Secret
Secret adjective - Undertaken or done so as to escape being observed or known by others.
Usage example: a secret operation to rescue captive soldiers behind enemy lines
Underhand is a synonym for secret in sly topic. In some cases you can use "Underhand" instead the word "Secret" as an adjective or an adverb, when it comes to topics like sneaky, secretive, undercover.
Underhand
Underhand adjective - Undertaken or done so as to escape being observed or known by others.
Usage example: the congressman's underhand attempt to slip several pork barrel items into the bill
Secret is a synonym for underhand in sly topic. You can use "Secret" instead the word "Underhand" as an adjective or a noun, if it concerns topics such as deceitful, secretive.
Nearby Word: underhanded
Mutual synonyms
Cite this Source
Underhand and Secret. (2016). Retrieved 2026, July 21, from https://thesaurus.plus/related/secret/underhand
Secret & Underhand. N.p., 2016. Web. 21 Jul. 2026. <https://thesaurus.plus/related/secret/underhand>.
Underhand or Secret. 2016. Accessed July 21, 2026. https://thesaurus.plus/related/secret/underhand.
Google Ngram Viewer shows how "secret" and "underhand" have occurred on timeline