Wiktionary
unfrightening
a. Not frightening.
Usage examples of "unfrightening".
Oddly unfrightening moments out of an unremembered past arriving on top deck for the sleeper’s inspection and enlightenment.
Even though I managed to think up other unfrightening tales, Cocóton insisted that I also tell and demonstrate how Tzeboruko had once flung me off The One World.
How pleasing and unfrightening airplanes were on the inside, how different from the hard, silvery, inhuman luster of the outside.
It was enthralling, demanding yet unfrightening, an experience of the senses.