Adult
Adult adjective - Relating to or typical of adults; displaying proper maturity.
Steadfast
Steadfast adjective - Firm in one's allegiance to someone or something.
Adult and steadfast are semantically related. Sometimes you can use "Adult" instead an adjective "Steadfast".
Nearby Words: steadfastness, steadfastly
Mutual synonyms
Cite this Source
Steadfast and Adult. (2016). Retrieved 2026, July 27, from https://thesaurus.plus/related/adult/steadfast
Adult & Steadfast. N.p., 2016. Web. 27 Jul. 2026. <https://thesaurus.plus/related/adult/steadfast>.
Steadfast or Adult. 2016. Accessed July 27, 2026. https://thesaurus.plus/related/adult/steadfast.
Google Ngram Viewer shows how "adult" and "steadfast" have occurred on timeline