insusceptible

Isn’t the real value intangible and insusceptible to economic metrics?

The first of these is, that yellow fever is strictly a self-limited disease, and therefore is insusceptible of jugulation.

We find it strong, pliable, insusceptible to either heat or cold and to all appearances will be more durable than anything we have ever used.

Investigation shows the opaque substances to be generally most susceptible, and the transparent materials, such as glass, rock-salt, tourmaline, &c. almost insusceptible, to the heating effect of the sun.

These grave questions are as yet insusceptible of answer.