In this abstruse pursuit; in making an account for Peggotty, of all the property into which she had come; in arranging all the affairs in an orderly manner; and in being her referee and adviser on every point, to our joint delight; I passed the week before the funeral.
There are no more uses of "abstruse" in the book.
Show samples from other sources
The professor’s lectures were so abstruse that students tended to avoid them.
She wanted a bottom-line answer without the abstruse analysis.