from Wiktionary, Creative Commons Attribution/Share-Alike License
- adv. In an unmysterious way.
Sorry, no etymologies found.
The puppets remain incurably cute, juvenile and unmysteriously "naughty."
The sullenness, the irritation had ceased so unmysteriously that Ranny in his matrimonial wisdom was left in no doubt as to its cause.
I'm beginning to fear that I'll never again git into the unmysteriously happy state in which I lived before this abominable man-of-war came to the island.