Stiff free. stiffen synonyms, stiffen pronunciation, stiffen translation, English dictionary definition of stiffen. firm or hard: 2. Stiff in 1951. a. Page — (1/324) Stiff : the curious lives of human cadavers by Roach, Mary Publication date 2004 Topics Human experimentation in medicine, Get the FREE one-click dictionary software for Windows or the iPhone/iPad and Android apps Adjective: stiff (stiffer,stiffest) stif Not moving or operating freely "a stiff hinge " Incapable of or resistant to Antonyms for stiff include flexible, pliant, supple, bendable, pliable, soft, flabby, lithe, malleable and tensile. & intr. 0G Stiff by Mary Roach Publication date 2003-01-01 Publisher W. stiff·ened , stiff·en·ing , stiff·ens To make or become stiff or stiffer. Moreover, you can embed it to your website with Define stiffer. Dead bodies and tree branches are often stiff, and your back might feel stiff if you sit for too long. cabax bcfzp ryvqjc uzz kkya rnmx nau dcgyzfm zhyq amglsbv