Somehow I just happened to hit on a website and found this interesting display of the origin of the word "fearless" [at least, according to the website, in English]:
So one could make some hypothesis here: (a) after 1/2 of your population is wiped out in a relatively few no. of yrs. due to plagues, you can imagine (or not) the kind of fear that had infiltrated every nook and cranny of the psyche and social fabric of a civilization (e.g., England)-- so, by early to mid 14th century (AD), here, out of the European world the word "fearless" was created ... for necessity (?) ... for sanity (?) ... for another possibility beyond living a way of life controlled so totally and overwhelmingly by a contagion of fear (fear of death of loved ones and self and just about everything else)...
It would be interesting to check out the origin of "fearlessness" ... maybe someone wants to find that on the internet... go for it...
