What does the word unaccountable mean?

Usage examples for unaccountable

  1. So she sat there on the ages- old trunk, with a wild feeling of unaccountable emotion in utter and complete possession of her soul. – The Heart of Unaga by Ridgwell Cullum
  2. " Quite unaccountable," answered Zeppa, who, with his son, had at last joined in the search out of sheer anxiety as to Rosco's fate. – The Madman and the Pirate by R.M. Ballantyne