At its core, śmiertelny means "mortal" or "liable to die". It describes the human condition—the fact that we are all, as they say in Polish, śmiertelni (mortal beings).
Interestingly, like the English word "deadly," śmiertelny (and its adverb form śmiertelnie ) finds its way into everyday slang and common expressions to mean "extremely". To be "deadly serious". Śmiertelnie nudny: "Deadly dull" or incredibly boring. Śmiertelnie zmęczony: To be "dead tired" or exhausted. Why Words Like This Matter Е›miertelny
Are there other or words with deep meanings you'd like to explore? ŚMIERTELNY in English - Cambridge Dictionary At its core, śmiertelny means "mortal" or "liable to die"
A mortal enemy, implying a conflict that cannot be resolved. 3. Everyday Hyperbole: "Deadly" Tired At its core