Critical
Critical adjective - Needing immediate attention.
Usage example: this problem isn't critical, so we can go home now and tend to it in the morning
Crucial is a synonym for critical in vital topic. In some cases you can use "Crucial" instead an adjective "Critical", when it comes to topics like reliable, safety, momentous, important. popular alternative
Crucial
Crucial adjective - Of the greatest possible importance.
Usage example: water is crucial to our survival
Critical is a synonym for crucial in vital topic. You can use "Critical" instead an adjective "Crucial", if it concerns topics such as reliable, safety, momentous, important. popular alternative
Nearby Word: crucially
Mutual synonyms
Cite this Source
Crucial and Critical. (2016). Retrieved 2026, July 21, from https://thesaurus.plus/related/critical/crucial
Critical & Crucial. N.p., 2016. Web. 21 Jul. 2026. <https://thesaurus.plus/related/critical/crucial>.
Crucial or Critical. 2016. Accessed July 21, 2026. https://thesaurus.plus/related/critical/crucial.
Google Ngram Viewer shows how "critical" and "crucial" have occurred on timeline