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
Urgent is a synonym for critical in serious topic. In some cases you can use "Urgent" instead an adjective "Critical", when it comes to topics like essential, vital, crucial, urgently important. popular alternative
Urgent
Urgent adjective - Needing immediate attention.
Usage example: I will need to put off everything but the most urgent issues
Critical is a synonym for urgent in acute topic. You can use "Critical" instead an adjective "Urgent", if it concerns topics such as essential, vital, needing immediate attention. popular alternative
Mutual synonyms
Both words in one sentence
- Though the fact that "strange glowing thingie" in question was actually the core component for what amounted to a Nuclear Fission reactor, and said reactor would go critical after an hour if it wasn't returned made things a lot more urgent.
Source: Linked List Clue Methodology
Cite this Source
Urgent and Critical. (2016). Retrieved 2026, July 21, from https://thesaurus.plus/related/critical/urgent
Critical & Urgent. N.p., 2016. Web. 21 Jul. 2026. <https://thesaurus.plus/related/critical/urgent>.
Urgent or Critical. 2016. Accessed July 21, 2026. https://thesaurus.plus/related/critical/urgent.
Google Ngram Viewer shows how "critical" and "urgent" have occurred on timeline