GRE TOEFL rigidity Definition The quality of being stiff, inflexible, or unyielding. Example "The rigidity of the rules made exceptions impossible." Sign in to save GRE PDF — $25 TOEFL PDF — $25 ← rigid rigor → Study tips featuring "rigidity" TOEFL Academic Vocabulary: Study by Topic Related words GRE awe GRE smithereens GRE abacus SAT abase GRE abash GRE abate GRE abbreviate GRE abbreviation SAT abdicate SAT abdomen GRE abduct GRE aberrant