Stĭff'en1, v. t.
(stĭf'n), v. t. [imp. & p. p. STIFFENED; p. pr. & vb. n. STIFFENING.] [A-S. stifian, L. Ger. stiven, D. stijven, H. Ger. steifen, Icel. styfa, Sw. styfna, Dan. stivne.]
Sense 1. To make stiff; to make less pliant or flexible; as, to stiffen cloth with starch.
Stiffen the sinews, summon up the blood. Shak.
Sense 2. To inspissate; to make more thick or viscous; as, to stiffen paste.
Sense 3. To make torpid. “Stiffening grief.” Dryden.