Indurate is a hard word—in more than one way. ... Durare is also the root of other durable English words, including during, endure, duration, durance, and even durable itself. In addition, indurate can be a verb meaning "to make or grow hard," "to make unfeeling, stubborn, or obdurate," and "to establish firmly."

How do you use Indurate in a sentence?

(1) Great heat indurates clay. (2) He is indurated to humble fare. (3) The usage is now firmly indurated. (4) Greediness indurated his heart.

What does Pertinacious mean in English?

1a : adhering resolutely to an opinion, purpose, or design. b : perversely persistent. 2 : stubbornly tenacious.