Secure
Sturdy
Sturdy adjective - Not showing weakness or uncertainty.
Usage example: you'll need a sturdy grasp of the concepts of algebra before you can take calculus
Secure is a synonym for sturdy in solid topic. Sometimes you can use "Secure" instead an adjective "Sturdy", if it concerns topics such as continue.
Nearby Word: sturdily
Cite this Source
Sturdy and Secure. (2016). Retrieved 2026, August 15, from https://thesaurus.plus/related/secure/sturdy
Secure & Sturdy. N.p., 2016. Web. 15 Aug. 2026. <https://thesaurus.plus/related/secure/sturdy>.
Sturdy or Secure. 2016. Accessed August 15, 2026. https://thesaurus.plus/related/secure/sturdy.
Google Ngram Viewer shows how "secure" and "sturdy" have occurred on timeline