This child’s presence always and infallibly called up in Vronsky that strange feeling of inexplicable loathing which he had experienced of late.
Apart from the interest Kitty took in this girl’s relations with Madame Stahl and with other unknown persons, Kitty, as often happened, felt an inexplicable attraction to Mademoiselle Varenka, and was aware when their eyes met that she too liked her.
There are no more uses of "inexplicable" in the book.
Show samples from other sources
With that he turned away and once again started inexplicably walking toward the wall.
James Dashner -- The Scorch Trials
For some inexplicable reason, those words popped into Thomas’s mind.