Sentence:  As he could not be prevailed on to give any account of himself in our introduction, I will take the opportunity of his confinement, while his back is turned, to give a slight sketch of his character;—fertile in whim-whams and <WSD>bachelorisms</WSD>, but rich in many of the sterling qualities of our nature. 
Meaning of the word marked with <WSD> tags:  A manner or peculiarity belonging to bachelors.