1. Tiono make stiff; to make less pliant or flexible; as, to stiffen cloth with starch. "Stiffen the sinews, summon up the blood." (Shak)

2. To inspissate; to make more thick or viscous; as, to stiffen paste.

3. To make torpid; to benumb.

Origin: See Stiff.

(01 Mar 1998)