Collocations for incapable - adj.

appear, be, feel, prove, seem
become
make sb, render sb
The wine had made him incapable of thinking clearly.

deem sb

absolutely, completely, quite, simply, totally, utterly
almost
largely
clearly
inherently
constitutionally, temperamentally
She was constitutionally incapable of bad temper.

physically
He was apparently physically incapable of lowering his voice.

mentally (esp. BrE)
This type of arrangement remains valid even if you become mentally incapable.

of
Computers are incapable of creative thought.