unaccountable

Definition

Inexplicable; unable to be accounted for or explained.

Etymology

From un- + accountable.

Example Sentences

• "And the having individually entertained four such resolves, without perceiving that once brought together, they all mutually expire; this, this ineffable folly, Pierre, brands thee in the forehead for an unaccountable infatuate!"
• "If only Poirot had been accessible, I could have asked his advice. What possessed him to go posting off to London in this unaccountable way?"
• "However, for some unaccountable reason, these trains used the small terminus which can still be seen at Oxford Road, thus tending to isolate the line from its parent companies' systems."