abstruse

For some abstruse reason Margaret's skirts were not affected by the wind.

It turns on an abstruse maxim of law, which makes it necessary for us to take a very circuitous mode of doing a very plain thing.

Next, because the abstruse details of physiology, in the present, are not intelligible for general reading.

I shook my head with the helpless feeling of trying to explain some abstruse knowledge to a child.

Willingly,” said Mr Escot, smiling; “I have an abstruse reason for the inquiry.

He sometimes surprised his hearers with the originality of his abstruse theories.

Selecting an abstruse and very unfamiliar subject, they delved into the Encyclopædia Britannica and thoroughly posted themselves.

It is a metaphysicological treatise, or the most abstruse metaphysics of theology.

It was useless to argue so abstruse a point with so interested and impassioned a reasoner.

There was a dull, wondering look in his eyes, as though he were trying to figure out some abstruse problem.