Sentence examples for are rather knotty from inspiring English sources

Nevertheless, doping is not effortless; p-type doping of certain materials, such as CdS and ZnO, are rather knotty.

They are rather like cloud formations themselves, only knotty and earthbound.

Lodgepole pine, spruce and other softer pine species are too knotty and not strong enough for roofing.

These are knotty, unanswerable questions.

Those two questions are knotty ones.

The roots are dense and knotty and thick and deep.

Shoes are their knottiest problem.

The knots are somehow knottier.

Here's a knotty one.

It was a knotty problem.

Here was a knotty problem to unravel,.