Collocations for incapable - adj.

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

adjudge sb, deem sb

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

physically
He was apparently physically incapable of lowering his voice.

mentally
This type of arrangement remains valid even if you become mentally incapable.

of
Computers are incapable of creative thought.