The lash so infuriated him that he dashed away to the railing (for some unknown reason he had been walking in the very middle of the bridge in the traffic).
There was at this time, for some unknown reason, a little mitigation in the severity with which the prisoners were treated, and Josephine was very sanguine in the belief that the hour of their release was at hand.
There is another and more retired route, not frequently traveled, but which Napoleon, for some unknown reason, took.
Madame Tallien, the companion of Josephine in her captivity and her benefactor after her release, was, for some unknown reason, peculiarly obnoxious to Napoleon.
Next, Manilov wondered whether, for some unknown reason, his guest had lost his wits; wherefore he spent some time in gazing at him with anxious intentness.
For some unknown reason, also, he glanced over his shoulder.
Its balustraded parapet is surmounted by fourteen large balls of stone, thirteen of them whole, and one out of which a cantle of nearly a quarter of its bulk has, for some unknown reason and at some unknown date, been cut.
The above list will hopefully provide you with a few useful examples demonstrating the appropriate usage of "for some unknown reason" in a variety of sentences. We hope that you will now be able to make sentences using this group of words.