stiffening stif·fe·ning US/ˈstɪfnɪŋ/ uncommon noun 1. the act of becoming stiff “stiffening his shoulders, he prepared to advance” 2. the process of becoming stiff or rigid Synonymsrigidifyingrigidification Related words Word family stiffenrigidify Broader terms procedurenatural process Narrower terms rigor mortis WordNet 2.1 (Princeton University). CMU Pronouncing Dictionary. WordNet 2.1 Copyright Princeton University. All rights reserved.
