Definition Dictionary

Something that obstructs or makes progress difficult.

Impossible or extremely difficult to understand.

Difficulty choosing between possible actions or alternatives.

Difficult or impossible to explain.

So closely connected or entangled that separation is difficult or impossible.

So deeply established that it is difficult to change.

Impossible or very difficult to satisfy.

Extremely difficult to tolerate.

Too great or difficult to overcome.

Difficult to manage, control, or resolve.