Fortifies

It fortifies itself by utilising the available terrain.

Reading fantasy and science fiction fortifies one's ability to understand hypothetical situations. Unlike religious texts, speculative fiction does not pretend to be truthful, but is admittedly fictional as interesting stories.

The equilibrium of soul and body is disturbed; and she fortifies herself in an obstinate idealism that cannot come to terms with the assaults of life.

Antisemitism fortifies Zionism.