kriittisemmissä
"Kriittisemmissä" is the illative plural form of the Finnish adjective "kriittinen." In Finnish grammar, the illative case signifies movement into, or a state of being within, a location or a more abstract concept. The adjective "kriittinen" translates to "critical" in English. Therefore, "kriittisemmissä" means "in more critical (situations/contexts/states)."
The word would be used in sentences to describe circumstances or conditions that have become more serious,